Long-term studies of Belding's ground squirrels show that immigrants move nearly 2 kilometers from where they are born and become 1%- 8 % of the males and 0.7 %-6 % of the females in other populations. On an evolutionary scale, why is this significant? A. These immigrants make up for the deaths of individuals, keeping the other populations' size stable. B. These immigrants provide a source of genetic diversity for the other populations. C. Those individuals that emigrate to these new populations are looking for less crowded conditions with more resources. D. Gradually, the populations of ground squirrels will move from a clumped to a uniform population pattern of dispersion.
Answers
The correct option is (B) These immigrants provide a source of genetic diversity for the other populations.
Migration is essential for maintaining genetic diversity among populations.
How is genetic diversity impacted by immigration?New alleles are introduced to an existing population when new, genetically distinct individuals enter it. By generating novel allele combinations through mating, the new organisms increase the genetic diversity of the species as a whole. Increasing heterozygosity and allelic richness, both of which are essential for population persistence, is the main way that immigration benefits populations. While allelic richness is directly related to the capacity for adaptation and long-term sustainability of populations, heterozygosity is of immediate consequence to both individual and community fitness.Learn more about the Genetic diveristy with the help of the given link:
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Related Questions
lamar constantly thinks about dirt and bacteria that exist all around him, and he feels compelled to wash his hands many times throughout the day. these thoughts and actions upset him and he wishes that he could control them. this is an example of the criterion for defining abnormal behavior.
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Any behavior that is abnormal, statistically rare, harmful to the individual or those around them, or that is otherwise uncharacteristic of the culture in question.
Disorders of abnormal psychology include anxiety disorders, compulsive behaviors, PTSD, mood disorders, personality disorders, schizophrenia, delusional disorders, substance use disorders, dissociative disorders, and impulse control disorders. Such behavior is frequently seen as a sign of a mental or emotional disturbance, which can range from mild adjustment issues to serious mental disorders.
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A plasma membrane is a thin layer of lipids and
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The Florida panther was once considered to be a subspecies of cougars. Current scientists, however, have studied the Florida panther and removed the subspecies classification
Which of the following would explain why the classification of the Florida panther changed?
A.) New genetic evidence suggests a much closer relationship between the Florida panther and other cougars
B.) Advanced technologies have shown a large difference in cell structure between the Florida panther and other cougars.
C.) Study of their embryos shows major differences in the development of the Florida panther fetus when compared to other cougars
D.)Shared physiological features
between the Florida panther and other cougars were also found in newly discovered organisms in the world.
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List 4 ways of how can you apply macromolecules to real world situations?
An example would be knowing if someone has a food allergy to a specific macromolecule by testing their stomach contents.
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The ways that one can apply macromolecules to situations include:
Macromolecules promote structural integrity.
They serve as a reservoir for stored energy, Have the capacity to store and retrieve
genetic data, and can They speed up metabolic processes.
What is a macromolecule?
A macromolecule, such as a protein or nucleic acid, is a very big molecule crucial to biophysical processes. It is made up of many atoms that are covalently bound. There are numerous macromolecules that are polymers of monomers, or smaller molecules.
Since macromolecules are composed of repeated monomer subunits, they are sometimes referred to as polymers, which means "many" units. Carbohydrates, lipids, nucleic acids, and proteins are examples of the four biological macromolecules of life. Protein makes up a sizable portion of our bodies' dry weight or the weight that is not water, which makes up a sizable portion of the total. Protein makes up a very high percentage of the substance in our organs (including the skin), glands, and body fluids. For example, our bones are roughly one-fourth protein. The entire animal kingdom, including the animals we feed and the bacteria that invade our bodies, is mostly constituted of protein, not just humans.
explain the advantages and disadvantages of sexual and asexual reproduction for the species that practice them. use specific examples for each method of reproduction to support your ideas.
Answers
To answer the specific question about the advantages and disadvantages of sexual and asexual reproduction, the following information can be provided:
Sexual reproduction advantages include genetic diversity, which leads to increased survival chances during environmental changes or disease outbreaks. A specific example is humans, who reproduce sexually and have diverse genetic traits that help them adapt to various environments.
Disadvantages of sexual reproduction involve the need for a mate, which can be time-consuming and energy-intensive. For example, some birds engage in elaborate courtship rituals to attract a mate, expending significant energy in the process.
Asexual reproduction advantages include rapid reproduction rates and the ability to reproduce without a mate, which is useful in environments with few potential mates. A specific example is bacteria, which reproduce asexually by binary fission, enabling them to quickly multiply and colonize new environments.
Disadvantages of asexual reproduction involve the lack of genetic diversity, which makes a population more vulnerable to environmental changes or disease outbreaks. For example, banana plants reproduce asexually through vegetative propagation, resulting in a lack of genetic diversity that makes them susceptible to diseases like Panama disease.
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which of the following is not true concerning the checkpoints in the cell cycle? group of answer choices mitosis stops if chromosomes are not properly aligned. the first checkpoint is located in the s phase of interphase. if dna is damaged, the cell will not be released into the s phase. mitosis will not occur if dna is damaged or not replicated.
Answers
The untrue statements concerning the checkpoints in the cell cycle is that the first checkpoint is located in the s phase of interphase.
Option B is correct.
What is a cell cycle?The cell cycle is described as the series of events that take place in a cell that cause it to divide into two daughter cells.
There are three primary checkpoints in the cell cycle:
G1 checkpoint, G2 checkpoint, andthe M checkpoint.We know that the first checkpoint is located in the G1 phase of interphase, and has the responsibility that the cell has adequate resources to enter the S phase.
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Make the model molecules for the reactants of photosynthesis by arranging your model atoms into groups that represent each molecule. Draw a picture (or take and attach a photo) of what you have made in the space labeled "Reactants" below Step 3.
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The reactants of photosynthesis are carbon dioxide and water with sunlight as an energy source, The model is shown in the attached picture.
What are reactants?Reactants are substances that combine together and undergo chemical changes in order to form new substances called products.
Plants and other living things employ a process called photosynthesis to transform light energy into chemical energy that can then be released through cellular respiration to power the organism's activities.
The reactants in photosynthesis are carbon dioxide and water which combine to form glucose and oxygen.
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How does the Cuban treefrog cause a reduction in biodiversity?
o It reduces biodiversity by reducing successful mating in native species.
o It reduces biodiversity because it reproduces rapidly.
o It reduces biodiversity because it has no natural predators in the area. o It reduces biodiversity by reducing food availability for native species.
Answers
Answer:
it reduces biodiversity because it reproduces rapidly
15 points please help
edge 2021
Which adds oxygen to the blood?
coronary circulation
arterial circulation
systemic circulation
pulmonary circulation
Answers
Answer:
C
Explanation:
Edge 2021
Disinfection is important in killing any remaining bacteria or pathogens in the wastewater. True False
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Answer:
True
Explanation:
It is typically a final step to remove organisms from the treated water before the effluent is released back into the water system. Disinfection prevents the spread of waterborne diseases by reducing microbes and bacterial numbers to a regulated level.
Disinfectants are used to rapidly kill bacteria. They kill off the bacteria by causing the proteins to become damaged and the outer layers of the bacteria cell to rupture. The DNA material subsequently leaks out.
Disinfection is the process designed to kill or inactivate most microorganisms in wastewater, including essentially all pathogenic organisms. Contrast this to sterilization, which is the removal and destruction of all living microorganisms, including pathogenic and saprophytic bacteria, vegetative forms and spores.
identify one condition, other than identical young plants, that should be held constant during experiment
Answers
Answer:
It depends on the experiment I think
Explanation:
the presence of gram-variable bacilli on the surface of epithelial cells collected from the vaginal mucosa indicates a. cervicitis. b. poor staining technique. c. bacterial vaginosis. d. diphtheria.
Answers
The presence of gram-variable bacilli on the surface of epithelial cells collected from the vaginal mucosa indicates c. Bacterial Vaginosis
Bacterial Vaginosis (BV) is the most common vaginal infection among women of childbearing age. Causing severe complications related to the reproductive health of women. This condition is characterized by replacement of vaginal lactobacilli with predominantly anaerobic micro-organisms such as Gardnerella vaginalis.
Gardnerella vaginalis is is Gram-variable bacilli or coccobacilli; catalase and oxidase negative, hydrolysis of sodium hippurate positive; acid production from glucose, maltose and sucrose (variable). Commonly described as a Gram-variable or Gram-uncertain micro-organism, meaning that its reaction to Gram staining can vary from negative to positive.
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difference between physical and non physical quantity
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Example : the SPEED of light, MASS of Earth, TEMPERATURE of the Sun, LENGTH of the cardboard, FORCE, TORQUE, etc
(The quantities in bold are physical ones)
Non- Physical Quantities are those which cannot be measured directly or indirectly.
Example : Your LOVE, basically all the feelings
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Ali Abdulla
, professor of physics
Answered 3 years ago · Author has 12.3K answers and 3.6M answer views
1. _______ are thought to have been present before vertebrates.
2. Cladograms are graphic representations of evolutionary history, which is called _______. They are sometimes referred to as phylogenetic trees.
3. Each node, or intersection, on a cladogram represents a/n _______ between two species.
4. Traits, or characteristics, that organisms develop and are passed down to become new species are called _______ traits.
5. Traits or structures that likely developed from common ancestors are called _______ structures.
6. Traits or structures that have a similar function, or job, but are not shared due to common ancestry are called _______ structures.
7. Primates are a group of animals that have developed many adaptations such as larger brains, binocular vision and _______ thumbs that support arboreal life.
8. New World monkeys differ from Old World monkeys because they have _______ which act as additional hands when living in the trees.
9. _______ is an early australopithecine skeleton, found in 1974.
10. Homo _______ is not thought to have evolved into Homo sapiens. The two are now thought to have been present at the same time as sister species.
11. Describe how scientists use comparative anatomy when building cladograms.
Answers
Answer:
Invertebrates are thought to have been present before vertebrates.
Cladograms are graphic representations of evolutionary history, which is called phylogeny. They are sometimes referred to as phylogenetic trees.
Each node, or intersection, on a cladogram represents a common ancestor between two species.
Traits, or characteristics, that organisms develop and are passed down to become new species are called acquired traits.
Traits or structures that likely developed from common ancestors are called homologous structures.
Traits or structures that have a similar function, or job, but are not shared due to common ancestry are called analogous structures.
Primates are a group of animals that have developed many adaptations such as larger brains, binocular vision and opposable thumbs that support arboreal life.
New World monkeys differ from Old World monkeys because they have prehensile tails which act as additional hands when living in the trees.
Lucy is an early australopithecine skeleton, found in 1974.
Homo neanderthalensis is not thought to have evolved into Homo sapiens. The two are now thought to have been present at the same time as sister species.
Scientists use comparative anatomy to identify homologous structures, or traits that are shared due to a common ancestor, among different species. By comparing these structures across many different species, scientists can build cladograms that show the evolutionary relationships between them.
based an your experiments in the previous section, how does tie ouserved relatve brightnes of a starchanger,
Answers
In your experiments with a star changer, you must have observed the relative brightness which is: directly related to the diameter of the lens.
The diameter of the lens, in turn, is directly proportional to the intensity of light that the lens captures. The relative brightness is also related to the surface area of the lens. The surface area, as we know, increases with the square of the diameter of the lens.
Therefore, if the diameter of the lens is doubled, the surface area will increase fourfold, making the image brighter. As a result, we can say that the brightness of the image observed in a star changer is directly proportional to the diameter of the lens, which is dependent on the surface area of the lens.
A bigger lens will be able to capture more light, resulting in a brighter image. Another way to increase the brightness of the image is to use a lens with a lower focal length. As the focal length of the lens is decreased, the image is magnified more, making it appear brighter.
However, this method comes with a downside. As the focal length decreases, the image's clarity decreases as well. Therefore, a balance between the diameter of the lens and the focal length must be maintained to get a bright and clear image of the star.
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The exchange rate is €1 =
R14,19.
1.1 Round off the exchange rate to the nearest R5
Answers
€1 would be almost equal to R15 if the conversion rate of R14.19 to R was rounded off to the nearest R5.In order to round R14.19, we look at its decimal value, which is 0.19. We round down to the nearest whole integer because this value is less than half of R5, which is 2.50. As a result, we reduce R14.19 to R14.
The value of R19 is then obtained by adding R5 to the rounded value of R14. Therefore, €1 is roughly equivalent to R19 at the rounded currency rate of €1 to the closest R5.Please be aware that rounding the exchange rate in this way only approximates the rate, and that the real exchange rate may change depending on the state of the market and the movement of the currency. Always seek the advice of a reputable
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what are four life supporting properties of water
Answers
Answer:
High specific heat capacity, density, polarity and hydrogen bonding.
What is 2/3 closer to 0 1/2 or 1
Answers
Answer:
1/2
Explanation:
Hope this helps!!!
Could I have brainliest pls
Answer:1/2
Explanation:
______ tend to effect the whole body.
A. Phototoxins
B. Endotoxins
C. Myotoxins
D. Exotoxins
Answers
Answer:
endotoxins
Explanation:
because they are inside of the body
What might explain why light travels in a straight line? Group of answer choices If there is nothing to interfere with light waves, they should travel in a straight line. Light waves will always travel in a straight line, even if they come into contact with another object. Light waves don't travel in a straight line. Light waves travel in a straight line because sound waves travel in a straight line.
Answers
Answer:
A. If there is nothing to interfere with light waves, they should travel in a straight line.
Explanation:
A light wave is a transverse wave, and do not require material medium for its propagation. It travels in straight lines in all directions from the source.
Light waves travel in straight paths (a principle referred to as the rectilinear propagation of light) known as rays, of which the combination of two or more rays gives a beam of light. When there is an obstruction on or interference with the path of light, it stops traveling in a straight line due to either absorption, refraction or diffraction.
When light from a source is forced to travel in one direction only, it is said to be polarized.
Jonathan used the following soil triangle to identify a sample of soil as sandy clay.
Soil texture triangle. Clay soil is approximately 45 percent or less sand, 50 percent or more clay, and 40 percent or less silt. Silty loam soil is approximately 50 percent or less sand, 30 percent or less clay, and 50 percent or more silt. Sandy clay soil is approximately 45 to 65 percent sand, 35 to 55 percent clay, and 25 percent or less silt. Sandy clay loam soil is approximately 45 to 80 percent sand, 20 to 35 percent clay, and 35 percent or less silt.
Which description of soil likely allowed Jonathan to make this identification.
Mostly large grains, with a gritty texture, 45% sand, 5% clay, and 45% silt
Mostly large grains, with a sticky texture, 55% sand, 40% clay, and 5% silt
Mostly small grains, with a sticky texture, 30% sand, 50% clay, and 20% silt
Mostly small grains, with a smooth texture, 30% sand, 5% clay, and 65% silt
Answers
The description of soil according to Jonathan is as follows:
Mostly large grains, with a gritty texture, 45% sand, 5% clay, and 45% silt ---- Silty loam soil.Mostly large grains, with a sticky texture, 55% sand, 40% clay, and 5% silt ----- Sandy clay soil. Mostly small grains, with a sticky texture, 30% sand, 50% clay, and 20% silt ----- Clay soil. Mostly small grains, with a smooth texture, 30% sand, 5% clay, and 65% silt ----- Silty loam soil. What is Soil Texture?Soil texture may be defined as a classification of soil on the basis of its physical appearance, texture, and properties.
In this question, the texture and composition of other soil are illustrated briefly with respect to each common soil type.
Therefore, it is well described above.
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parasympathetic functions generally include: a. the constriction of bronchioles. b. allowing the body to cope with an external threat. c. mobilizing storage energy sources. d. a stimulation of heart rate and force of contraction.
Answers
Parasympathetic functions generally include the constriction of bronchioles. The correct answer is (a).
Parasympathetic functions generally involve the conservation of energy and the promotion of rest and relaxation. The parasympathetic nervous system is one division of the autonomic nervous system and works in opposition to the sympathetic nervous system.
One of the primary functions of the parasympathetic system is to regulate and control various organs and tissues, including the respiratory system. The parasympathetic stimulation causes the constriction of bronchioles in the lungs. This constriction helps in narrowing the airways, which can be beneficial in situations where reduced airflow is required, such as during rest or sleep.
The constriction of bronchioles by the parasympathetic system helps to decrease the amount of air entering the lungs, leading to a decrease in respiratory rate and volume. This allows for efficient gas exchange in the lungs and helps in conserving energy by reducing unnecessary airflow.
It is important to note that the other options (b, c, d) listed are not associated with parasympathetic functions:
b) Allowing the body to cope with an external threat is a function associated with the sympathetic nervous system, which is responsible for the fight-or-flight response.
c) Mobilizing storage energy sources is also associated with the sympathetic nervous system, which promotes the release of stored energy for immediate use in response to stress or physical exertion.
d) Stimulation of heart rate and force of contraction is primarily regulated by the sympathetic nervous system, which increases heart rate and cardiac output to prepare the body for increased activity or stress.
Therefore, the correct answer is a) the constriction of bronchioles, which is a parasympathetic function.
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Discuss at least 3 ways that animals move.
Answers
Answer:
Walk, fly, and swim.
Explanation:
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What is the answer to this?
Answers
Answer:
Ribosomes
Explanation:
I hated this topic in science, until my teacher talked about it with me in 6th grade. we heavily discussed each organelle, and I am almost POSITIVE that this fits the category of Ribosomes. I hope this helped! stay safe and keep learning!
Because conservation means using fewer natural resources and reducing wastes, it helps
a.
slow overpopulation and grow food.
b.
prevent habitat destruction and reduce pollution.
c.
prevent biodiversity and destroy species.
d.
stop exotic species and create habitats.
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
a
Explanation:
just did it
Answer:
the answer should be "B"
The transfer of pollen grains to the female part of the plant is called in vitro fertilization.
True or False?
Answers
What happens to tissue muscle before and after workout
Answers
Answer:
the force your muscle to contract as hard as the can
Answer:
Short-Term Effects
In the short term muscle can become fatigued and sore for reasons like impaired blood flow, ion imbalance within the muscle, nervous fatigue, loss of desire to continue exercising, and most importantly, the accumulation of lactic acid in the muscle.
Receptor proteins are important in the functioning of both the nervous and hormone-secreting systems because they are
Answers
Answer:
Receptors are a special class of proteins that function by binding a specific ligand molecule. When a ligand binds to its receptor, the receptor can change conformation, transmitting a signal into the cell. In some cases the receptors will remain on the surface of the cell and the ligand will eventually diffuse away.
Explanation:
which of the following incorrectly describes the role of atp in skeletal muscle? group of answer choices atp drives the na/k pumps which maintain proper distributions of na and k ions atp binding to myosin breaks the acto-myosin cross bridge atp powers the reuptake of calcium back into the sr atp binds to actin to make the power stroke happen atp is hydrolyzed to re-energize the cross bridge by myosin atpase
Answers
Answer:D
Explanation:atp binds to actin to make the power stroke happen is incorrect as ATP binds with myosin to provide the energy required for the cross bridge
ATP also has a rule in the sodium potassium pump which exchanges 3 Na+ out with 2 K+ to maintain the RMP of skeletal muscle which is -90mv And also ATP has an important role in the reuptake of ca++ back to SR.
Which of the following people is most likely to develop varicose veins?
Answers
Answer:
An overweight, elderly woman who spends most of the day sitting. is correct
Explanation: