In rats, black eyes (B) are dominant to red eyes (b). If a rat that is heterozygous for eye color
is crossed with a red-eyed rat, what will the phenotype ratio of their offspring be?

Answers

Answer 1

Answer:

Bb x bb

Genotypes: Bb, Bb, bb, bb

Phenotypes: 1:1


Related Questions

Identify the wave that has the highest amount of energy​

Answers

Answer:

the tallest one

that is the amplitude

would you rather get hit by which wave if it were water?

Explanation:

HELP PLEASE!!!
A. Describe the difference between gradualism and punctuated equilibrium.
B. Describe the conditions under which new species may arise.
C. Explain the difference between allopatric and sympatric speciation.
D. Describe the role of prezygotic and postzygotic barriers in the process of speciation.

Answers

A. Both theories describe the rates of speciation. For Gradualism, changes in species is slow and gradual, occurring in small periodic changes in the gene pool, whereas for Punctuated Equilibrium, evolution occurs in spurts of relatively rapid change with long periods of non-change.

B. New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed.

C. Allopatric speciation occurs when two species are living in separate environments and therefore there is no gene flow between the populations. ... Sympatric speciation occurs when two species are living in the same environment.

D. Reproductive isolation is a mechanism that keeps species from mating with others. Prezygotic isolation prevents the fertilization of eggs while postzygotic isolation prevents the formation of fertile offspring. ... Postzygotic mechanisms include hybrid inviability, hybrid sterility and hybrid "breakdown."

ANSWER FOR BRAINLIEST AND 40 POINTS!!!!!!

Answers

Answer:

true

Explanation:

GIVING BRAINLIEST!!!!

What is a similarity between the temperate climate zone and polar climate zone?

A) Both of the climate zones have warm and hot weather and lots of precipitation.
B) In both polar and temperate zones, the temperature of the warmest month is about 18°C.
C) The temperature can get to 0°C in both temperate and polar climate zones.
D) The temperate and polar climate zones both usually have 150 cm of precipitation.

Answers

In both the polar and temperate zones, the temperature of the warmest month is about 18°C. So, the correct option is B.

What are Polar and Temperate zones?

Temperate regions are defined as regions with mild temperatures that lie between the subtropical and polar regions where the two regions between the Tropic of Capricorn and the Antarctic Circle or the Tropic of Cancer and the Arctic Circle are called temperate regions.

The polar region is defined as the area around the North Pole or the South Pole, where the North Polar Region consists mainly of flotation and pack ice, 7–10 feet (2–3 m) thick which floats on the Arctic Ocean and is surrounded by land. In both zones, the temperature of the warmest month is about 18°C.

Therefore, the correct option is B.

Learn more about Climate zones, here:

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PLEASE ANSWER ASAP!!!!
A high population of greater prairie chickens once inhabited the prairies of Illinois. The conversion of the prairies into agricultural land caused the chickens to lose their habitat. Studies have concluded that this change greatly reduced the greater prairie chicken population. The habitat loss also resulted in a decrease in the population’s genetic variation.

Which change in the gene pool occurred in the greater prairie chicken population?
gene mutation
gene flow
genetic drift
genetic resistance

Answers

Answer:

The answer is C. genetic drift

Hope this helped <3

Answer:

c

Explanation:

did it on edge 2023

Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all of the first generation of the offspring have red, axial flowers. The genes for flower color and location assort independently. If 1,000 second generation offspring resulted from the cross, approximately how many of them would you expect to have red, terminal flowers

Answers

Answer: 750

Explanation:

Based off the first two sentences, we can conclude that red is the dominant allele and white is the recessive allele.

Let's say R = red and r = white.

The genoytypes of the parents are RR and rr. The genotype of the first generation are all Rr

The punnet square for the second generation is:

               R          r

  R        RR       Rr

  r         Rr         rr

We can see 3/4 crosses give us red. Now we can multiply 3/4 and 1000 to get 750.

Why
laboratory rats kept and studied in the exclusion zone?

Answers

They are studied by the scientist so that they can examin them time to time

Which structure is found most likely in green plant cells but not in animal cells?
A. Large vesicle
B. Mitochrondrion
C. Cell membrane
D. Nucleus

Answers

C is the answer im pretty sure its right

Choose 1-3 activities that you perform regularly and explain the role(s) that each organ system plays in each activity, as well as explain how organ systems work together to perform the chosen activities.

Answers

Can you take a picture of the problem and post it

A trait that occurs in 900 individuals out of a total of 1,800 individuals occurs with a probability of

Answers

Answer: 25

Explanation: I hope this helps you out <3

A trait that occurs in 450 individuals out of a total of 1,800 individuals occurs with a probability of  25.

Which 3 are the biggest problem facing our environment today. (choose only 3)

Maintaining Biodiversity
Pollution
Habitat destruction
Resource use
Deforeststation
Population growth

Answers

Answer:

pollution

deforestation

population growth

Which was first launched during the Space Race?

rover
satellite
space shuttle
space station

Answers

Answer:

Satellite or space shuttle but im pretty sure satellite

Explanation:

Answer:

B.) Satellite

Explanation:

got it right on test

According to paragraph 1, which of the following factors limits the abilities of populations within an ecosystem to survive?

Answers

Answer:

Availability of space, shelter, food, and water

According to paragraph 1, the factor that limits the abilities of populations within an ecosystem to survive is the availability of space, shelter, food, and water that is present in option C.

What are the ecosystem's limiting factors?

Ecosystems are composed of living organisms and the nonliving elements with which they interact, including air, water, soil, and sunlight. Within an ecosystem, all organisms have certain requirements for survival, such as the need for space, shelter, food, and water. These resources are often limited within any given ecosystem, which means that populations within the ecosystem are limited in terms of their ability to survive and reproduce.

Hence, the factor that limits the abilities of populations within an ecosystem to survive is the availability of space, shelter, food, and water that are present in Option C.

Learn more about the ecosystem's limiting factors here.

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question is incomplete, complete question here

According to paragraph 1, which of the following factors limits the abilities of populations within an ecosystem to survive?

A)The frequency of reproduction of each species

B)The number of organisms becomes too large

C)Availability of , space, shelter, food, and water

D)Availability of a diversity of species

Radiometric dating allows us to determine...
a. Which rock layers are the oldest.
b. The relative ages of the layers of rocks and the fossils within
them.
c. The exact or absolute age of rock layers.
d. A and B are correct.
e. A and C are correct.

Answers

Answer:

a and c are the correct answer so option E. thank you .

In the 1950s, Stanley Miller performed experiments to study the origins of life. He created an atmosphere rich in methane, hydrogen, ammonia, water, and simulated lightning. Which substances were most likely produced during Miller’s experiments?


A. protists


B. bacteria


C. amino acids


D. RNA strands

Answers

Answer:

c. amino acids

Explanation:

The substances most likely produced during Miller's experiments would be amino acids.

In their simulation of the early atmosphere, Stanley Miller was able to obtain a mixture of organic compounds in the broth with the major one being amino acids.

The discovery of Stanley Miller gave further credence to the chemosynthetic theory of the origin of life because amino acids form the building blocks of proteins and proteins are essential for the onset of life.

More on the origin of life can be found here: https://brainly.com/question/10527581?referrer=searchResults

1. Wave speed depends on the type of wave, the _______ , and the medium the wave is traveling through

Answers

The back way take u back now ways for sum

GIVING BRAINLIEST!!!

What is a similarity between reduced space and a lack of food?

A) They both cause animals to move where there are less resources.
B) They both affect prey more than they affect predators.
C) They can both cause animals to move to a new environment.
D) They both affect plants more than they affect animals.

Answers

its is the third letter in the alphabet [aka c]

The similarity between reduced space and a lack of food is the option "C" they can both cause animals to move to a new environment.

How does population affect resources?

Prompt population growth continues to be a significant underlying force of environmental degradation and a hazard to the sustainable use of natural resources.

It diminishes the quality and quantity of natural resources through overexploitation, intensive farming and land fragmentation.

Thus, option "C" is correct.

To learn more about the population click here:

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What are the three states or forms water can be found in?

Answers

solid, liquid, and gas.
Gas(vapor), liquid(water), solid(ice)

Which of the following is not a rock type?
a. igneous
b. sedimentary
C. cubic
d metamorphic

Answers

Answer:

C. Cubic!!! Hope this helps!

Explanation:

it’s cubic !!!! that’s easy

Do two organisms that express the same trait have to

carry the same genetic information?

Answers

No, I don’t believe so. I might be wrong though.

Answer:

Any organism that receives the same genetic information for a trait from each parent. Also, any organism that has either two dominant or two recessive genes dominant trait, therefore the trait will show in a hybrid.

Jerome puts two magnetic vehicles very close to each other. what will happen next, and why?

Answers

The magnetic vehicles will move closer to each other because the magnetic force will pull the vehicles together.

All human beings differ from one another by roughly what percentage of their total DNA?

Answers

Answer:

All human beings are 99.9 percent identical in their genetic makeup. Differences in the remaining 0.1 percent hold important clues about the causes of diseases.

What is the answer ?

Answers

Answer:

I would guess, it is C

Explanation:

Answer:

c

Explanation:

Describe what would happen to mass and weight if you were on
the moon.

Answers

Answer:

the moon's weight is less than the Earth so the moon will not pull objects toward itself at the strength of the Earth. This means that if you went to the moon you would weigh less, even though your mass stays the same

Explanation:

I hope this helps :)

A pluripotent stem cell can form only one type of cell. PLEASE HELP!! TRUE OR FALSE

Answers

Answer:

False

Explanation:

These embryonic stem cells are pluripotent. This means that they can turn into more than one type of cell.

Please do all for 50 points,
please.

Answers

The first on is Force. Second one is Push. Third one is Pull. Fourth one is gravity. Last one is friction.

If I am wrong sorry..

Water birds cannot fly. Please select the best answer from the choices provided T F

Answers

True, Water birds such as Penguins can not fly sooo

This is a picture of a coordinate graph.

Which ordered pair describes a point that is located 4 units to the left of the origin and 6 units below the x-axis?

(4, −6)
(6, −4)
(−4, −6)
(−6, −4)

Answers

Answer:

This is not biology.

Which cell does not have a nucleus

Answers

answer:
prokaryotes

step by step:
Prokaryotes are organisms whose cells lack a nucleus and other organelles.

What are the differences between carnivorous animals and omnivorous animals?​

Answers

The main difference is their diet. Animals that eat only meat are carnivores. When animals eat both plants and meat, they are called omnivores.

1. Teeth

Carnivore's teeth are long, sharp and pointed, helpful piercing into flesh. Omnivore's (meat and plant eaters) teeth are similar to that of carnivores. Omnivores have sharp canine teeth at the front of the mouth to cater for meat, and flat molars to allow a grinding action for plant material.

2. Digestive enzymes

As with the herbivore, amylase is contained within the saliva of the omnivore, which also utilises the chewing action to help break down the coarse fibres and carbohydrates that makes up plant material. Amylase is not present within the saliva of carnivores hence the burden of digesting carbohydrates is taken by the pancreas. Long term over loading of the pancreas is associated with insulin resistance and ultimately the failure of the pancreas to produce of insulin as found in type II diabetes.

3. Jaws

The jaws of carnivores are highly muscular and strong, which ensure a firm grip on the captured prey. They have stronger jaws than omnivores.


4. Gut

Usually, the gut of the herbivores is longer than in carnivores, but omnivores have a long gut to capacitate both types of diets. Carnivores gut is not as long as the herbivores and omnivores. Therefore, they get hungry and thirsty more often than herbivores.


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