1. A taxon that includes a common ancestor, all descendants of that ancestor, and no other organisms is considered to be A) paraphyletic. B) polyphyletic. C) synapomorphous. D) monogamous. E) monophyletic.
Answers
A taxon that includes a common ancestor, all descendants of that ancestor, and no other organisms is considered to be monophyletic. Thus, the correct option is E.
In monophyletic taxon, a group is composed of a collection of organisms, which includes the most recent common ancestor of all those organisms and all the descendants of that most recent common ancestor. A monophyletic taxon is also termed as clade. Example of a monophyletic group- one group comprised of humans, apes, and new world monkeys, they share the most common recent ancestral group, which is the old-world monkeys. Monophyletic group includes a node. All of the descendants of that node is represented by both nodes and terminal taxa.
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Related Questions
A population of rabbits has 2 fur patterns, a dominant solid pattern and a recessive spotted pattern. this is a trait controlled by a single gene. a population of 1000 rabbits was observed and it was found that 90 rabbits had the spotted pattern. what is the gene frequency of the allele for spots? use the hardy-weinberg equation.
Answers
When an organism is homozygous, it contains two copies of the same allele for a gene. When an organism possesses two copies of the same dominant allele.
How phenotypically diverse are the progeny of a cross between two chinchilla rabbits?If the chinchilla rabbit breeds exclusively, all of the offspring would be chinchilla; however, if any other alleles, such as the Himalayan or albino allele, are present, there will be offspring with various colors in the phenotypic ratio of 1 chinchilla: 1 Himalayan/albino.
What occurs when two recessive genes are present?You have a 25% (1 in 4) chance of inheriting the faulty gene from both parents and getting the condition if you are born to parents who share the same autosomal recessive gene. One faulty gene can be inherited with a 50% (1 in 2) risk. You would then become a carrier.
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How do absorption, reflection, and refraction change the movement of P waves?
Answers
Answer:
Absorption, reflection and refraction will all change of the movement of P waves. Absorption will reduce the energy of the waves. Reflection will bounce the waves back. Refraction will change the angle of the waves based on what they are bouncing off of.
Explanation:
Give gene combinations for each of the following dihybrid genotype:
a) TTPP
b) ttpp
c) TtPP
d) TtPp
Answers
why is protecting sloths and the places where they live important?
Answers
It's important because there is a cycle ad if the sloths are not protected they will keep on decreasing and that "food chain" will start to break. For example, if the number of sloths decreased the animal that ate them which is the jaguar will ALSO decrease because they don't have the sloths to eat anymore, and the animals that the sloth eats will start to increase so much that it will find a way to harm the environment. So we should protect sloths because if their population decreases the "food chain" will get all jumbled up and it will harm the environment.
I hope this helps!!!!
Which of the following is NOT true about this cell?
A.) The haploid number would be 3.
B.) It has 3 pairs of chromosomes.
C.) The diploid number is 6.
D.) It is a haploid cell.
Answers
Answer:
A.) The haploid number would be 3
Answer:
The answer is A
Explanation:
Which of the following is NOT a necessary condition for natural selection to occur? a) Individuals must reproduce to form the next generation b) Individuals with different traits have different likelihoods of survival and reproduction c) Individuals within a population must vary in traits d) Individuals pass on at least some of their traits to their offspring though genetic inheritance e) Individuals must reproduce sexually
Answers
The correct answer is e) Individuals must reproduce sexually.
Natural selection is a mechanism of evolution that acts on heritable traits within a population, leading to differential survival and reproduction of individuals with favorable traits.
While sexual reproduction is a common reproductive strategy in many organisms, it is not a necessary condition for natural selection to occur. Natural selection can also operate in populations where individuals reproduce asexually.
The other options listed,
a) Individuals must reproduce to form the next generation,
b) Individuals with different traits have different likelihoods of survival and reproduction,
c) Individuals within a population must vary in traits, and
d) Individuals pass on at least some of their traits to their offspring through genetic inheritance, are all necessary conditions for natural selection.
Reproduction, variation in traits, differential survival and reproduction based on traits, and genetic inheritance of traits are fundamental components of the process of natural selection.
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if the infectious dose (id) for gonorrhea is 1,000 cells and the id for tuberculosis is 10 cells, which organism is more virulent?
Answers
If the infectious dose (id) for gonorrhea is 1,000 cells and the id for tuberculosis is 10 cells, mycobacterium tuberculosis organism is more virulent.
Mycobacterium tuberculosis is a type of bacteria that causes tuberculosis (TB).
When a person with active TB disease in their lungs coughs or sneezes, TB bacteria-containing droplets that are ejected are inhaled by the other person.
Although TB spreads similarly to the flu or the common cold, it is not as contagious.
To become infected oneself, you would need to come in contact with an infected individual for several hours at a time.
For instance, TB infections typically spread inside households where family members reside. It would be extremely uncommon for you to contract the disease by sharing a seat with an infected person, like on a bus or train.
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1) How much genetic variation occurs among cells that are produced by mitosis/cell division?
2) what accounts for all of the different types of cells that we find in our bodies?
Answers
A person's chromosomes are evenly distributed throughout each cell during mitosis. Also, meiosis produces reproductive cells with fresh gene combinations.
genetics' meaning?The scientific study of genetics examines genes and heredity, or the process by which specific characteristics or traits are transferred from parents to children as a result of variations in DNA sequence. A gene is an area of DNA that provides instructions for creating one or more chemicals that support bodily function.
What examples come from genetics?Studies of genes are done in genetics. Information is handed down from one generation to the next through our genes. In contrast to their sibling, who has dark hair like their father, one child has blonde highlights like their mother due to genetics.
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dark-staining clusters of rer and ribosomes in neurons are called __________.
A) microglia.
B) neurofilaments.
C) neurofibrils.
D) Nissl bodies.
E) perikaryon.
Answers
The dark-staining clusters of RER and ribosomes in neurons are called (D) Nissl bodies.
Nissl bodies are found in the perikaryon or cell body of neurons. They are composed of rough endoplasmic reticulum (RER) and ribosomes, which are responsible for protein synthesis in the neuron. Nissl bodies stain darkly with basic dyes like methylene blue, toluidine blue, and cresyl violet.
This is because they contain RNA, which binds to these dyes.
Microglia are a type of glial cell in the central nervous system (CNS) that play a role in immune defense. Neurofilaments are a type of intermediate filament that is found in neurons. They provide structural support to the axon and dendrites of the neuron.
Neurofibrils are bundles of neurofilaments that are found in the axon of the neuron. They help to maintain the shape of the axon and facilitate the transport of materials along the axon.
Perikaryon refers to the cell body of the neuron, which contains the nucleus and other organelles.
In summary, (D) is the correct answer.
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The process of digestion is accomplished by using 2 primary mechanisms: mechanical and chemical. Explain how each of these mechanisms works in order to accomplish the primary goal of digestion (absorp
Answers
The process of digestion involves the breakdown of large food molecules into smaller, absorbable molecules. Mechanical and chemical mechanisms are two primary mechanisms involved in digestion.
Mechanical digestion is a process in which food is physically broken down into smaller pieces. This process begins in the mouth, where food is chewed and mixed with saliva, which contains enzymes that initiate the breakdown of carbohydrates. The food is then swallowed, and it enters the stomach, where it is further broken down by muscular contractions and stomach acid. This process continues in the small intestine, where the food is mixed with bile and pancreatic juices that further break it down into smaller molecules.
Chemical digestion is a process in which large molecules are broken down into smaller molecules by enzymes. This process begins in the mouth, where enzymes in saliva begin the breakdown of carbohydrates. Enzymes produced by the pancreas further break down carbohydrates, proteins, and fats in the small intestine. The breakdown products of digestion are absorbed into the bloodstream through the walls of the small intestine.The primary goal of digestion is to break down food into small molecules that can be absorbed into the bloodstream. The mechanical and chemical mechanisms work together to accomplish this goal by breaking down large food molecules into smaller, absorbable molecules.
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A fish farmer has a large pool used to grow a species of fish. The farmer decides to add a second species of fish to the pool. Both fish species feed on the same type of food, but the fish farmer does not increase the amount of food added to the pool, maintaining the same carrying capacity in the pool.
Which graph shows how the population of the two fish species will change?
Answers
Answer:
D
Explanation:
Explanation: The capacity of fish to the ratio of population change increased and showed a variable degree of measurements.
describe the following conditions: diuresis, glycosuria and polyuria
Answers
Answer:
Explanation:In the absence of diabetes mellitus and diuretic use, the most common causes of chronic polyuria are primary polydipsia, central diabetes insipidus, and nephrogenic diabetes insipidus. Hypernatremia can indicate central or nephrogenic diabetes insipidus. Hyponatremia is more characteristic of polydipsia.
The most common cause of polyuria in both adults and children is uncontrolled diabetes mellitus, which causes osmotic diuresis, when glucose levels are so high that glucose is excreted in the urine. Water follows the glucose concentration passively, leading to abnormally high urine output.
Why are pollutants more harmful to tertiary (top) consumers as opposed to producers?
Answers
Answer:
because making that substance is does not generate that much pollutants, but using that substance generates more pollution.Explanation:
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Cognitively, people with borderline personality disorder are ________ negative emotional stimuli in the environment. less aware of hyperattentive to avoidant of resistant to
Answers
Cognitively, people with borderline personality disorder are hyperattentive to negative emotional stimuli in the environment.
Does the environment affect borderline personality disorder?The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR)1 classifies borderline personality disorder (BPD) as belonging to the Cluster B personality grouping and is associated with the cluster traits of dramatic, emotional, and erratic personality features. Patients with BPD are described as being emotionally brittle and hyper-reactive, which fits with this description. The trait of emotional hyper-reactivity in BPD patients will be examined in this issue of The Interface from the standpoint of clinical experience as well as through data from empirical investigations.
Additionally, it has been demonstrated that the environment plays a significant part in how impulsivity manifests itself since BPD patients who experienced several childhood hardships are more likely to have made multiple impulsive harming attempts. With indicators like emotional dysregulation and impulsivity considered temperamental variants that have negative impacts in an unfavorable context but positive ones in a favorable setting, this model can be used to understand borderline personality disorder.
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You are going to dissect a frog and examine its inner anatomy. a. What are five pieces of lab equipment that you would use and what you would use each tool to do?
Answers
Answer:
The five piece of lab equipment that we will use are
1. Preserved frog specimen
They are safe to use and are not subject to hazardous materials regulations or disposal restrictions.
2. Dissection tray
They are essential when analyzing internal structures and component related functions. Compatible with lining waxes used to provide unadulterated dissecting pin surfaces or including odor absorbent pads, pans allow animals to be securely held in place.
3. Scalpel
They are used to make cuts into the body. This is a very sharp instrument and comes in various sizes for different types of cuts and surgeries. Most blades are made of either carbon or stainless steel.
4. Dissecting scissors
They are used for fine dessection ,making incisions, cutting apart tissues and removing different organs.
5. Forceps
They are used to handle tissues and other materials and also to manipulate needles and other instruments whilst operating. They are commonly used for grasping fine tissue and blood vessels or soft tissue dissection.
Please mark me as BrainliestIn the carbon cycle, carbon dioxide and water are converted to glucose and oxygen by ________
Answers
Answer:
Photosynthesis
Explanation:
Gteen plants through this process to convert Carbon dioxide in the air and water to carbohydrate (glucose) and oxygen.
what's the elements of iron
Answers
Answer:
Fe
Explanation:
Iron is a chemical element with symbol Fe and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen, forming much of Earth's outer and inner core
We
What claims are made by the transporting company?
Check all that apply.
ith
-e
5
eir
hts
The transport is maintained at -18°C.
0 -18°C maintains the quality of ice cream.
The crystal size of creamy ice cream is 5um.
They produce creamy ice cream crystals at 15 um.
They maintain ice cream crystal size at 15 um.
Answers
Answer: A, B, and E
Explanation: Just did it rn
Answer:
A. The transport is maintained at –18°C.
B. –18°C maintains the quality of ice cream
E. They maintain ice cream crystal size at 15 µm.
Explanation:
Immunology
1. Please explain the term HVGR.
Answers
HVGR stands for High-Velocity Gravitational Radiography, a technique used in immunology to visualize and study the movement of immune cells within the lymphatic system. It involves injecting a radioactive tracer into the body, which is taken up by the lymphatic system and carried along with the flow of lymph.
The tracer emits gamma radiation, which can be detected by specialized imaging devices such as gamma cameras or positron emission tomography (PET) scanners.
By tracking the movement of the radioactive tracer, HVGR allows researchers to observe the migration patterns and dynamics of immune cells as they travel through lymphatic vessels and lymph nodes. This technique provides valuable insights into the immune response, including how immune cells interact with antigens, how they traffic between different lymphoid tissues, and how they contribute to immune surveillance and defense against pathogens.
HVGR offers a non-invasive means to study the complex network of lymphatic vessels and immune cell trafficking, providing researchers with valuable information about immune system function and potential dysregulations.
It has been particularly useful in studying conditions involving abnormal immune cell migration, such as lymphomas, autoimmune diseases, and metastatic cancer. By understanding the patterns of immune cell movement, researchers can develop targeted therapies and interventions to modulate immune responses and improve disease outcomes.
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permutation or combination? in how many ways can we get 2 heads in 4 tosses of a coin?
Answers
To find the number of ways of getting two heads in four tosses of a coin, we need to use the concept of combinations.
There are different ways to approach this problem, but one common method is to use the binomial coefficient formula for combinations, which is given by:
C (n, k) = n!/(k!(n-k)!)!
where n is the total number of items,
k is the number of items to choose, and
! denotes factorial (the product of all positive integers up to a given number).
In this case, we have n=4 tosses of a coin, and we want to choose k=2 of them to be heads.
The other two tosses will be tails, but we don't need to choose them explicitly, since they are determined by the choice of heads.
Therefore, we can write:
C (4, 2) = 4!/(2!(4-2)!) = 6
The answer is 6 ways of getting 2 heads in 4 tosses of a coin.
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Jorge is studying a pond ecosystem in his neighborhood. The pond is home to a variety of plant and animal species, as well as a stop for birds that migrate through the region.
One summer, heavy rains wash an unusual amount of fertilizer into the pond. Jorge observes the algae population growing rapidly, and quickly algae cover the pond's surface. Several weeks later, many fish and other animals die in the pond. However, within two years, the algae population has returned to its previous size, as have the populations of all the ecosystem members.
Jorge's observations provide the strongest evidence for which of the following conclusions about the pond?
A. The pond ecosystem has very high biodiversity that protects it from invasive species.
B. The pond ecosystem is resilient to changes in many abiotic and biotic factors.
C. The pond ecosystem can withstand only certain levels of algal growth.
D. The pond ecosystem may change over time, but its species will continue living there indefinitely.
Answers
Answer:
I think that the answer is C.
Explanation:
If the levels of algae were too high then it would be the reason as to why the fish died. When the algae went back to normal,the fish were able to live there again.
I hope that helps!
Answer:
C.The pond ecosystem can withstand only certain levels of algal growth.
Explanation:
what does the movie clip say about the digestion of food?
what does changes happened to the food as it was moved through the digestive tract?
Answers
The movie clip provides insights into the digestion of food and the changes that occur as it moves through the digestive tract. Mainly, the clip highlights the importance of the digestive system in breaking down food and extracting nutrients.
It emphasizes that digestion begins in the mouth, where food is mechanically broken down through chewing and mixed with saliva, which contains enzymes to initiate the digestion of carbohydrates. The partially digested food then travels through the esophagus to the stomach, where it is further broken down by stomach acids and enzymes.
Next, it moves to the small intestine, where the majority of nutrient absorption takes place. Here, the food is broken down into smaller molecules by enzymes and absorbed into the bloodstream.
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In three to five sentences explain how people continually moved westward in different periods of American history
Answers
In different periods of American history, people moved westward seeking new opportunities, resources, and land. This was driven by a combination of economic, political, and social factors.
What are different periods?
People moved westward in different periods of American history for various reasons, including economic opportunities, land acquisition, and religious freedom. In the 19th century, the Louisiana Purchase and the Homestead Act provided land at low prices or for free, attracting farmers and settlers to the west. During the Gold Rush of the mid-1800s, thousands of people flocked to California seeking wealth and prosperity. Later, in the mid-20th century, the development of the automobile and the highway system made it easier for people to move west for employment and better living conditions. Overall, westward expansion played a crucial role in shaping American history and identity.
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photo attached, what structures are A-F please help
Answers
Answer:
57esutpxtud75sr07d75075sztu9
Answer: A might be the nucleus and F is amino acid
Explanation:
help
Cell membranes are------------------because they allow some substances to pass through more easily than others.
Answers
Answer:
Selectively permeable
What is the proper term for the measure of how inbred an animal is?
A. Inbreeding coefficient
B. Inbreeding measurement
C. Inbred ratio
D. Inbreeding results
Answers
The proper term for measuring the level of inbreeding in an animal is the "inbreeding coefficient."
A. Inbreeding coefficient: Quantifies the degree of inbreeding in an animal through a numerical value.
B. Inbreeding measurement: Not commonly used; "inbreeding coefficient" is the preferred term.
C. Inbred ratio: Not commonly used; "inbreeding coefficient" is the preferred term.
D. Inbreeding results: Not accurate; "inbreeding coefficient" provides a quantitative assessment.
How is the level of inbreeding measured in animals?The proper term for measuring the level of inbreeding in an animal is the "inbreeding coefficient."
A. Inbreeding coefficient:
This is the correct term used to quantify the degree of inbreeding in an animal. It is a numerical value that represents the probability of inheriting identical alleles due to common ancestry.B. Inbreeding measurement:
This term is not commonly used to describe the measure of inbreeding in animals. The more appropriate term is "inbreeding coefficient."C. Inbred ratio:
While "inbred" refers to animals with a high level of inbreeding, the term "inbred ratio" is not commonly used to measure or describe inbreeding levels. The inbreeding coefficient is the preferred term.D. Inbreeding results:
This term does not accurately describe the measure of inbreeding in animals. The more appropriate term is "inbreeding coefficient," which provides a quantitative assessment of the level of inbreeding.Learn more about inbreeding
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spinal cord stimulation 50 years later: clinical outcomes of spinal cord stimulation based on randomized clinical trials—a systematic review
Answers
SCS is a safe and effective treatment for chronic pain that is refractory to conservative treatments. The study concludes that SCS should be considered as a treatment option for patients with chronic pain who have failed to respond to conservative treatments.
Spinal cord stimulation 50 years later: Clinical outcomes of spinal cord stimulation based on randomized clinical trials—a systematic review Spinal cord stimulation (SCS) is a treatment that has been utilized for over 50 years for chronic pain syndromes, especially neuropathic pain. The most commonly used mechanism for SCS is the activation of the dorsal column of the spinal cord using a low frequency electrical stimulation.SCS has been found to be effective in treating various types of chronic pain, including neuropathic pain from failed back surgery syndrome and complex regional pain syndrome.
SCS has been proven to be effective in the management of chronic pain that is refractory to conservative treatments. It has been shown to enhance functional capacity, improve health-related quality of life, and decrease the utilization of healthcare resources.
The aim of this systematic review was to examine the clinical outcomes of SCS based on randomized clinical trials (RCTs).The systematic review of randomized clinical trials found that SCS is an effective treatment for various types of chronic pain.
The review included studies on patients with chronic pain due to failed back surgery syndrome, complex regional pain syndrome, and chronic neuropathic pain. SCS has been shown to improve quality of life, enhance functional capacity, and reduce the utilization of healthcare resources.
SCS is a safe and effective treatment for chronic pain that is refractory to conservative treatments. The study concludes that SCS should be considered as a treatment option for patients with chronic pain who have failed to respond to conservative treatments.
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name an organic molecule that carbon is found in
Answers
Answer:
Methane (CH4)
Explanation:
Hydrocarbons are organic molecules consisting entirely of carbon and hydrogen, such as methane (CH4) described above.
1. Describe what matter is made of?
2. Give a definition of diffusion?
3. Describe how you can tell if there are some flowers in a dark room?
4. Explain how you think oxygen might get from the air in your lungs into your lungs?
Answers
Answer:
Elements
Explanation:
Need help ASAP PLZ!
Which type of cell must be produced more frequently than the other types?
1)brain cells
2)red blood cells
3)muscle cells
4)liver cells
5)stomach lining cells
Answers
Answer:
3 because the muscle cells is produced
Red blood cells are produced more frequently than the other types, the body produces them every second, hence option 2 is correct.
Why do red blood cells produce more frequently?Medication that promotes the formation of RBCs: Erythropoietin is a hormone that is made in the liver and kidneys and stimulates the production of RBCs in the bone marrow. Some types of anemia can be treated with erythropoietin.
In order to replace those red blood cells that eventually deteriorate and die, red blood cells are continuously created in the bone marrow. A red blood cell has a lifespan of roughly 120 days on average. Anemia and shortness of breath result from a large drop in the number of red blood cells.
Therefore, It just takes a few weeks to replenish red cell reserves because your body produces roughly 2 million new ones every second.
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