A cross between Labrador retrieves that are both black and heterozygous for the B gene and the E gene (BbEe) yields offspring in a 9 (Black): 3 (brown): 4 (yellow) ratio. What is the explanation for this ratio instead of the 9:3:3:1 ratio normally expected in a dihybrid cross? What is the property called? What does the E gene have to do with yellow Labradors? Please diagram this cross using a Punnett square and carefully explain the genotypes and phenotypes that are observed.
Answers
If two heterozygous black labrador retrievers were crossed. The genotypes of the offspring 9 black dogs, 3 brown dogs, 4 yellow dogs.
The genotypes of the offspring can be determined using a Punnett square analysis.
We need to determine the genotypes of the two parent dogs. Let's use B for the dominant allele that produces black pigment and b for the recessive allele that produces brown pigment.
The two heterozygous black labrador retrievers can be represented as BbDd x BbDd.
The Punnett square for this cross is:
| BD Bd bD bd
Bd | BBDd BbDd BbDd Bbdd
bD | BbDd BBDD Bbdd BbDD
bd | Bbdd Bbdd bbdd bbdd
From this Punnett square, we can see that the expected offspring genotypes are:
9 black dogs: 3 BBDD, 6 BbDd
3 brown dogs: 3 bbdd
4 yellow dogs: 4 Bbdd
Therefore, the genotypes of the offspring are:
9 black dogs: 3 BBDD and 6 BbDd
3 brown dogs: 3 bbdd
4 yellow dogs: 4 Bbdd
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Related Questions
Based on what you’ve learned about NPP decomposition and fossil fuel formation where do you expect the aquatic organisms to have lived and died
Answers
Question Completion with answer options:
1. Tropical river systems
2. Shallow temperate lakes fed by fast-moving streams
3. Oceans and seas (accumulating on the seafloor)
4. Subarctic lakes
Answer:
I expect the aquatic organisms to have lived and died in:
3. Oceans and seas (accumulating on the seafloor).
Explanation:
Well-established researches have concluded that the fossil fuels that turn into hydrocarbons: coal, fuel oil, or natural gas, are formed from the dead plants and animals that were left for millions of years underground seafloors. Thereafter, the compounds that make up these planktons and plants turn into fossil fuels through a complex process of decomposition, during which they form peat and coal. Then, these resources are extracted through coal mining and the drilling of oil and gas wells onshore and offshore.
The areas of the cerebral cortex that are responsible for the integration of new information with stored information are the _____ areas.
Answers
The areas of the cerebral cortex that are responsible for the integration of new information with stored information are the association areas.
What are the association areas in the cerebral cortex?The cerebrаl cortex, mаde up of billions of neurons аnd gliаl cells, is divided into the right аnd left hemispheres аnd into four lobes.
The frontаl lobe is primаrily responsible for thinking, plаnning, memory, аnd judgment. The pаrietаl lobe is primаrily responsible for bodily sensаtions аnd touch. The temporаl lobe is primаrily responsible for heаring аnd lаnguаge. The occipitаl lobe is primаrily responsible for vision.Other аreаs of the cortex аct аs аssociаtion аreаs, responsible for integrаting informаtion.
The remаinder of the cortex is mаde up of аssociаtion аreаs in which sensory аnd motor informаtion is combined аnd аssociаted with our stored knowledge. These аssociаtion аreаs аre the plаces in the brаin thаt аre responsible for most of the things thаt mаke humаn beings seem humаn. The аssociаtion аreаs аre involved in higher mentаl functions, such аs leаrning, thinking, plаnning, judging, morаl reflecting, figuring, аnd spаtiаl reаsoning.
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How much time is needed for a 15,000 W engine to do 1,800,000 J of work ? (Power: P = W/t)
Answers
Answers:
T =120s
Explanation:
P=15,000
W=1,800,000 J
P=W/T
T=W/P
T=1,800,000 J/15,000W
=120s
Which of the following occur in a maple tree growing in a temperate climate in response to increasing cold weather? Choose three correct answers.
Answers
The three correct answers are:
B. The chlorophyll in the leaves break down, revealing yellow and red pigments that had been masked by the green pigments. This process leads to the beautiful fall foliage colors observed in maple trees. As the weather gets colder, the breakdown of chlorophyll exposes the underlying pigments, creating vibrant red, orange, and yellow leaves.
C. Xylem and phloem fill with ions and organic substances that prevent freezing. In response to increasing cold weather, the tree transports ions and organic compounds into the xylem and phloem. These substances act as antifreeze agents, preventing the freezing of sap and ensuring the circulation of nutrients and water within the tree.
D. Meristems form thick scales to protect next year's buds from cold winter temperatures. The meristems, which are the regions of the tree where new growth occurs, undergo changes in response to the approaching cold weather. They form protective scales around next year's buds to shield them from the harsh winter conditions, ensuring their survival and future growth.
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Your question is incomplete, but most probably your full question was:
Which of the following occur in a maple tree growing in a temperate climate in response to increasing cold weather? Choose three correct
answers.
A. Auxin production stimulate one final growth spurt before winter arrives,
B. The chlorophyll in the leaves break down, revealing yellow and red pigments that had been masked by the green pigments.
C. Xylem and phloem fill with ions and organic substances that prevent freezing.
D. Meristems form thick scales to protect next year's buds from cold winter temperatures,
Planets A and B have the same size, but planet A is half the mass of planet B.
Which statement correctly explains the weight you would experience on each
planet?
OA. You would weigh the same on both planets because your mass
would be the same on both.
OB. You would weigh more on planet A because it has less mass than
planet B.
OC. You would weigh the same on both planets because the planets
are the same size.
OD. You would weigh less on planet A because it has less mass than
planet B.
Answers
The statement that would correctly explains the weight you would experience on each planet is You would weigh less on planet A because it has less mass than planet B. Option D
How does mass affect weight?Weight is the force experienced by an object or person due to gravity. Since it is as a result of gravitational force, it depnds on both the mass of the objct or person and the level of gravity of the planet.
Gravity is dependent on th mass of the planet, and if planet A has lesser the mass of planet B, its gravitational force will be most likly be weaker.
This therefore means a person is going to weigh less on planet A than on planet B, even though both planets have the same size.
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It is suspected a patient has Grave’s disease. What symptoms could the patient have to indicate this diagnosis? What values would you expect of the TSH, T3 and T4, and why? What are the treatment options for Grave’s? How does each correct the hyperthyroidism?
Answers
Answer: the symptoms could vary a ton through a, b or c you have to look at the information given around the background through the intreval.
Explanation:
why do you add chilled methylated spirits to the filtrate
Answers
Answer:
The detergent breaks apart the cellular membranes and the salt binds to the DNA to make it less able to remain soluble in water (it neutralizes the charge of the DNA and it is less able to bind to water).
Explanation:
hope this helps
Match the event with the most appropriate term.
different species of shrimp evolving on either side of the Isthmus of Panama
a flowering plant that produces a polyploid cell that can self-fertilize and produce a new species
hard shells that allow reptiles to lay eggs on land
the physical disparity in size between male and female gorillas
more white-coated hares appeared compared to brown-coated hares during an ice age
Answers
The Match of the event with the most appropriate term are:
Allopatric speciation- different species of shrimp evolving on either side of the Isthmus of PanamaSympatric speciation- a flowering plant that produces a polyploid cell that can self-fertilize and produce a new speciesBalanced polymorphism- hard shells that allow reptiles to lay eggs on landKey innovation - the physical disparity in size between male and female gorillasDirectional selection -more white-coated hares appeared compared to brown-coated hares during an ice ageWhat is directional selection?When those with qualities that are on one side of the population's mean survive longer or reproduce more than those on the other, this is known as directional selection. It has been repeatedly shown in wild populations using both experimental and observational methods.
Due to the fact that people who possess both forms of a gene are more likely to survive than people who only have two copies of one version, balanced polymorphism occurs when two distinct versions of a gene are kept in a population of organisms.
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Which is a physiological description rather than an anatomical one? Multiple Choice There are fenestrations (openings) in the epithelial cells of capillary walls. The walls of blood capillaries are composed of a thin epithelium. The esophageal wall includes a middle layer of dense irregular connective tissue. The muscles of the intestinal wall contract slowly and involuntarily. The muscles of the thigh are composed of skeletal muscle tissue.
Answers
Answer:
The muscles of the intestinal wall contract slowly and involuntarily.
Explanation:
The study of specific characteristics and mechanism of the human body that makes it to exist as a living being is called physiology.Thus it is concerned how the body systems functions.The mechanisms involved that makes each organ to function.It is not related to the structure which is anatomy.
What are the two ways to deal with pollution, and which is more effective?
Answers
Answer:
Reduce the number of trips you take in your car.
Reduce or eliminate fireplace and wood stove use.
Avoid burning leaves, trash, and other materials.
Avoid using gas-powered lawn and garden equipment.
Explanation:
It depends on you're opinion honestly but i hope it helps!
elk with large antlers are able to fight off other males and will dominate The herb are
Answers
Answer: disruptive
Explanation:
What is done to identify the victim in forensic dentistry?
A performing comparative dental identification
B. preparing antemortem dental record of the victim
C.studying tooth eruption of the victim
D. studying tooth development of the victim
Answers
Answer:
Brainliest
Explanation:
If you’re one of the hundreds of millions of Americans that listen to true crime, chances are you’ve heard about a case that was solved by forensic dentistry. Forensic dentistry, also called forensic odontology, is the application of dentistry within the criminal justice system. It is typically used to identify unknown victims or perpetrators. More broadly, it refers to the proper handling and examination of dental evidence, which is later presented in a court of law. Forensic odontology is also often used to identify the victims of mass disasters.
Answer: A) performing comparative dental identification
Explanation: :)
Which objects can make shadows? (Select all that apply)
1. Refrigerator
2.clear plastic
3.backpack
4.clear glass
5.wooden door
Answers
Answer:
Explanation:
1 and 5
Answer:
refrigerator
backpack
wooden door
this is because clear plastic and clear glass and transparent/ translucent and therefore light passes through it not forming a shadow.
A shadow is ONLY formed if light is blocked by an object etc.
What is the purpose of natural selection?
Answers
Answer:
The purpose of natural selection is not a conscious or intentional one, as it is not driven by a specific goal or purpose. Instead, natural selection is a fundamental process in biology that acts on heritable traits within populations over generations. It is a key mechanism of evolution.
Explanation:
The primary outcome of natural selection is the adaptation of organisms to their environment. Individuals with traits that are advantageous in a particular environment are more likely to survive, reproduce, and pass on those beneficial traits to their offspring. Conversely, individuals with traits that are disadvantageous are less likely to survive and reproduce, leading to a reduction in the frequency of those traits in the population over time.
Natural selection, therefore, acts as a filter that shapes the characteristics of populations, favoring traits that enhance an organism's survival and reproductive success in a given environment. Over many generations, this process can lead to the development of new species or the modification of existing ones, as populations accumulate adaptations that allow them to thrive in different ecological niches.
It's important to note that natural selection does not have an end goal in mind, nor does it necessarily lead to the "best" or most advanced organisms. Instead, it is a consequence of the interactions between organisms and their environment, constantly shaping and refining the traits of living beings based on their ability to survive and reproduce.
a question was asked by a teacher to a student. She gave the student a jumbled word and told him to make words out of it. The jumbled word is gzeysktqix. Now you know what to do. see ya!
Answers
Here are some words that can be made from the jumbled word "gzeysktqix":
gazeskiquiztaxizigzagkickskeyzigskygetHow are words formed from jumbles of letters?Words are formed from jumbles of letters by rearranging the letters in a way that creates a valid word in the English language. There are a few different ways to do this.
One way is to use a dictionary. A dictionary lists all of the words in the English language, along with their definitions. By looking up the jumbled letters in a dictionary, you can find out if they form any valid words.
Another way to form words from jumbles of letters is to use a word unscrambler. A word unscrambler is a software program that can help you unscramble jumbled words.
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If this experiment was repeated and the entire set up was placed in a dark closet, predict what would happen to each of the organisms in the jar use your knowledge of photosynthesis and respiration to justify your answer
Answers
The plant would stop photosynthesis due to the lack of light in the dim closet. Chlorophyll and other colors would be lost, and it would turn white. It would eventually exhaust the energy reserves in the roots and stem and perish.
What about photosynthesis?Photosynthesis is the process through which plants turn carbon dioxide, water, and sunlight into oxygen and sugar-based energy.More than just the essential necessities of water and sunlight are needed for growth. The five key factors that influence how well your plants or crops develop are light, carbon dioxide, water, soil organisms, and nutrients.Photosynthesis is primarily used to convert solar energy into chemical energy, which is then stored for use at a later time.This mechanism primarily provides energy to the planet's life systems.This indicates that without energy, it cannot happen (from the Sun). Chlorophyll, a green pigment found in leaves, absorbs the needed light. Chloroplasts, which contain chlorophyll, are present in the palisade and spongy mesophyll cells of plants.Learn more about photosynthesis here:
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explain how a kidney machine works if you have a kidney failure
Answers
Answer:
Explanation:
A kidney machine, also known as a hemodialysis machine, filters your blood through a dialyzer, which works like a kidney and filters out extra salt, waste, and fluid. The machine has built-in safety checks to ensure the process is safe and effective. A pump in the machine slowly draws out your blood, then sends it through the dialyzer. Your cleaned blood is sent back into your body through the second needle in your arm.
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What could happen to a species if the environment changes causing it to become less well adapted to its environment?
A. The species will have less competition.
B. The species may become extinct.
C. The species is more likely to survive and reproduce.
D. There will be more variation within the species.
Answers
Answer:
C
Explanation:
There are several enzymes involved in DNA replication. Which of the following replication enzymes correctly pairs with its function?
A) DNA polymerase III adds the nucleotides to the primer using the base pairing rule.
B) DNA polymerase I opens the DNA at the replication fork.
C) Helicase seals gaps between DNA fragments.
D) DNA primase extends primers by adding nucleotides to the 3' prime end.
Answers
DNA polymerase III is the most important enzyme in DNA replication. It adds nucleotides to the primer and extends the DNA strand. Therefore option A is correct.
DNA replication is a process where the two parental strands serve as a template for the synthesis of new daughter strands. DNA polymerase has the ability to add nucleotides only to the 3’ end of the primer, thus it can extend the DNA strand only from the 5’ to 3’ direction.
This enzyme has very high processivity and hence synthesizes new strands very quickly. It also has the proofreading ability which means it can remove the incorrectly added nucleotides by means of an exonuclease enzyme.
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Which of the following occurs from one trophic level to another?
A)
energy increases
B)
entropy decreases
C)
biomass decreases
D)
all of the above
Answers
Answer: C biomass decreases
Explanation:
Got it right on Edge
Answer:
C, Biomass decreaces
Explanation:
I just took the test edge 2020 :)
Skeleton features cladogram
Answers
The main skeletal features used to construct a cladogram include the presence or absence of specific bones/structures, bone shape/structure, dental characteristics, skeletal adaptations, and skull morphology.
Cladograms are phylogenetic trees that illustrate the evolutionary relationships between different organisms. When constructing a cladogram, various skeletal features can be used as characters to determine the branching patterns and common ancestry among organisms. Here are some main skeletal features used in cladistic analysis:
Presence or absence of specific bones or structures: The presence or absence of certain skeletal elements, such as wings or limbs, can provide insights into evolutionary relationships.
Bone shape and structure: Comparing the shapes, sizes, and structures of bones can help identify shared characteristics and infer common ancestry.
Dental characteristics: The structure and arrangement of teeth, including the type and number of teeth, can provide information about evolutionary relationships and dietary adaptations.
Skeletal adaptations: Features like the presence of a notochord, presence of a bony skeleton, or modifications for specialized locomotion (e.g., wings, fins, limbs) can be used to infer evolutionary relationships.
Skull morphology: Examination of the skull, including the shape of the cranium, presence and structure of specific cranial bones, and jaw structure, can help determine evolutionary relationships and functional adaptations.
By analyzing these skeletal features and comparing them across different organisms, cladistic analysis aims to identify shared derived characteristics (synapomorphies) that indicate common ancestry and to construct a branching pattern that represents the evolutionary relationships between the organisms being studied.
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What are the main skeletal features that can be used to construct a cladogram?
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Tristan wraps some gifts and then brings them to the post office where they are delivered to people in different parts of the country. Which organelle is Tristan most like?
Answers
The Golgi apparatus (body) is the organelle that is similar to Tristan's work.
What is the Golgi apparatus?The Golgi apparatus is an organelle responsible for transporting proteins and fats (lipids) in the cell.
The Golgi apparatus is also responsible of chemically modifying these transported proteins.
In conclusion, the Golgi apparatus is the organelle that work as Tristan.
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Which cellular communication appears to be signaling between cells that are separated by long distance?
A. autocrine
B. paracrine
C.endocrine
D.juxtacrine
Answers
Signals from distant cells are called endocrine signals; they originate from endocrine cells. In the body, many endocrine cells are located in endocrine glands, such as the thyroid gland, the hypothalamus, and the pituitary gland.
What is the main difference between cell division in plants animals
Answers
Answer: The key difference between plant and animal cell division is that plant cells form the cell plate in between the two daughter cells in mitosis, whereas the cell membrane forms the cleavage furrow in between the two daughter cells in animal cells.
Hope this helps!
Answer:
The key difference between plant and animal cell division is that plant cells form the cell plate in between the two daughter cells in mitosis, whereas the cell membrane forms the cleavage furrow in between the two daughter cells in animal cells.
Explanation:
Which best describes biogeographic isolation?
Answers
Answer:
Biogeographic isolation is the separation of two populations of the same species due to physical factors. It may lead to evolution, as the groups will adapt to their new circumstances, which may be dramatically different between the two locales.
Which kind of body tissue lines the oral cavity?
Answers
Answer:Oral Mucosae
Explanation:This is because the oral mucosae is the type of body tissue that lines up with the oral cavity.
Understanding the effects of alcohol will help me
Answers
The effects of alcohol are high blood pressure, heart disease, stroke, liver disease, and digestive problems.
What are the 5 effects of alcohol on the body?
High blood pressure, heart disease, stroke, liver disease, and digestive problems are the effects of alcohol. Cancer of the breast, mouth, throat, esophagus, voice box, liver, colon, and rectum also occur due to more consumption of alcohol. Weakening of the immune system, increasing the chances of getting sick, Learning and memory problems, dementia and poor school performance also the cause of alcohol.
So we can conclude that the effects of alcohol are high blood pressure, heart disease, stroke, liver disease, and digestive problems.
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Schistosome: How long does it live?
Answers
A hot air balloon
Uses_____
as
a method of heat
transfer
Answers
Answer:
Explanation:
free convection
This transfer of heat energy away from the ground by the vertical movement of air is called "free convection" or "natural convection." A hot air balloon rises because warmer air is less dense than cool air.
Q1) Based on the information in the unit, explain why the number of predators is declining in the
Appalachian region. What effects might this have on the forest?
Q2) Why is it important that diverse areas of the forest are monitored when counting trees? What
could happen if this wasn't done?
Q3) The unit discusses measuring growth in forests. Where else might it be important to measure
the growth of trees? Why?
Q4) If trees in a timber cruise were found to be of many different species, would that mean that the
forest could be used for timber? Explain your answer.
Q5) Why do you think that biodiversity is good for ecosystems?
Answers
Answer:
Q1) The number of predators is declining in the Appalachian region due to factors such as habitat loss, hunting, and disease. This can have significant effects on the forest ecosystem, as the absence of predators can lead to an increase in the populations of their prey. This can, in turn, cause a decrease in the populations of other species that rely on those prey for food, and can also result in an overgrazing of certain plant species, leading to a disruption in the balance of the forest ecosystem.
Q2) It is important to monitor diverse areas of the forest when counting trees because different areas may have different types of trees or different densities of trees. Focusing on only one type of area or tree species could result in an inaccurate count and misrepresentation of the forest's overall health. If diverse areas of the forest are not monitored, it could lead to an incomplete understanding of the forest's ecosystem, and potentially lead to poor management decisions.
Q3) It is important to measure the growth of trees in other areas such as urban environments, parks, and nature reserves. This is because trees provide essential benefits such as shade, air purification, and carbon sequestration, and monitoring their growth can help determine their health and inform management decisions. In urban environments, for example, trees can help mitigate the effects of heat islands and improve air quality.
Q4) The presence of multiple species in a timber cruise does not necessarily mean that the forest can be used for timber. The species of trees, their size, and their density all play a role in determining the economic viability of a timber harvest. Additionally, other factors such as the terrain and accessibility of the forest also need to be considered.
Q5) Biodiversity is important for ecosystems because it provides stability and resilience. A diverse ecosystem can better withstand environmental stressors such as climate change, disease, and natural disasters, as different species may have different adaptations and roles within the ecosystem. Biodiversity can also provide important ecosystem services such as pollination, nutrient cycling, and pest control. Furthermore, a diverse ecosystem can be more aesthetically pleasing and provide recreational opportunities for people.