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Contact [7]
2 years ago
6

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offsprin

g. Cats that have coats that are a patchwork of black and orange are called tortoiseshell cats, are typically female, and have genes that code for both black fur (Xo) and orange fur (XO) located on the X chromosomes. Y chromosomes do not code for color in tortoiseshell cats. A female cat that has only orange fur (XOXO) is crossed with a male cat that has only black fur (XoY). How many of the offspring will exhibit tortoiseshell coloring? 1 in 4. 2 in 4. 3 in 4. 4 in 4.
Biology
1 answer:
faltersainse [42]2 years ago
6 0

Answer:

2 in 4

Explanation:

If a female cat with orange fur (XOXO) is crossed with a male cat with black fur (XoY) then:

P: XOXO  x  XoY

F1: XOXo  XOY  XOXo  XOY

This means that half of the offspring will be females with tortoiseshell color  (XOXo) and other half  of the offspring will be males with orange fur (XOY).

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Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells

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2 years ago
HELP! ASAP! Please UNDERLINE the dependent variable and BOLD the independent variable FOR EACH.
zepelin [54]

Answer:

1. <u>The height of bean plants</u> depends on the amount of water they recieve.

2. The higher the temerature of the air in the oven, <u>the (speed of which) a cake will bake.</u>

3. Lemon trees receiving the most water produced the most<u> lemons (amount)</u>

4. An investigation found that more <u>bushels of potatoes</u> were <u>produced</u> when the soil was fertalized (amount) more.

5. The amount of <u>pollution</u> produces by cars was measured for cars using gasoline containing different amounts of lead.

Explanation:

The independent variable is what you change and the <u>dependent</u> variable is what is being measured. It is like cause and effect.

(sorry this is my first answer apologizes for any mistakes)

5 0
3 years ago
A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in the labor
PSYCHO15rus [73]

A mutation is an alteration in the original DNA sequence.  Option 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

<h3>What is a mutation?</h3>

A mutation is a stable and hereditably change in the genetic material.

Mutations alter DNI sequences and introduce new variants. Many of these variants are eliminated, but some of them might succeed and be incorporated in each individual, affecting the entire species.

They can be damaging or beneficial. These last mutations are the ones that have been selected by natural selection.

Different mutagenic agents cause changes in genetic information, increasing mutations over the normal level. They can change the bases sequences and bases pairing.

Mutations depend on each group's environment and its ecological pressures, and they accumulate in time. They are inherited to the followings generation and get to spread.

According to this framework, the correct option is 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

If the analyzed chemical is a mutagen, then it will cause an alteration in the DNA sequence and this change -mutation- will pass to the following generations spreading in the population.

You can learn more about mutations at

brainly.com/question/13923224

brainly.com/question/9598940

brainly.com/question/17106056

#SPJ1  

A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in

the laboratory

Which statement best provides evidence that the substance is a mutagen?

  1. The cells die within hours of being exposed to the chemical.
  2. The cells grow more quickly than those that were not exposed to the chemical.
  3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
  4. The cells continue to divide at the same rate as before they were exposed to the chemical.
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The answer is B , i hope this helps

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Rocks created from intense heat or pressure deep inside Earth are called...
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