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Natali [406]
3 years ago
12

Brown hair is dominant over red hair. What will the genotypes and phenotypes of the offspring of a cross between a homozygous br

own hair person and a heterozygous brown hair person?
Do the process in five steps.

1.

2.

3.

4.

5.
Biology
1 answer:
beks73 [17]3 years ago
6 0

Answer:

1) The alleles for homozygous brown hair will be BB.

2) The alleles for heterozygous brown hair will be Bb

3) Let's make a punnet square to check for the outcomes:

       B          b

B   BB        Bb

B    BB       Bb

4) The results from the punnet square depict that the phenotype of all the children produced will be brown hair.

5) The punnet square depicts that there will be a 50% probability of the child to carry the heterozygous genome (Bb) and there is also 50% probability for the child to carry homozygous dominant genome (BB).

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Answer:

The correct answer is: <em>C. Increased average lifespan to 78 in the US.</em>

Explanation:

Science has impacted human health by increasing the average lifespan to 78 in the US. Over the last couple of decades, the life expectancy of Americans has increased significantly than what it was 200 years ago. This can be attributed to:

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In these ways, science has impacted human health by increasing the average lifespan to 78 in the US.

8 0
3 years ago
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GaryK [48]

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So Independent is what you change, Dependent is what you measure
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