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Reil [10]
3 years ago
11

PLEASE HELLPPP! Will mark brainliest

Biology
1 answer:
Nimfa-mama [501]3 years ago
7 0

Answer:

The answer is B, hope this helps!

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3 years ago
8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.
devlian [24]

Answer:

Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.

Explanation:

Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.

The cross can be represented by a Punnett Square:

<u>Bb X Bb cross </u>

alleles     B    b

B             BB Bb  

b             Bb bb

Where the result is:

<u>Genotypes</u>:  

  • Bb, 50%
  • BB, 25%
  • bb, 25%

<u>Phenotypes</u>:

  • Brown feathers, 75%
  • Red feathers, 25%.

In this case, the probability of having brown or red feathers is 3:1.

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3 years ago
A box is sliding at constant velocity. The coefficient of friction between the box and the surface is 0.27. The push force on th
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Blank are chemical messagners secreted by glands
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Answer:

The answer is probably hormone

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A substance that moves from by passive transport tends to move
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You see, passive transport needs no energy. So that being said, it moves from areas with high concentration to areas with low concentration.

Hope that helps!
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