In humans, curly hair is dominant over straight hair. Which cross below has the correct probabilities listed?

a woman heterozygous for hair curl, a man heterozygous for hair curl will

produce 25% straight hair, 75% curly hair

a woman homozygous recessive for hair curl, a man homozygous recessive

for hair curl will produce: 100% curly hair

a woman heterozygous for hair curl, a man homozygous recessive for hair

curl will produce: 75% straight hair, 25% curly hair

a woman homozygous dominant for hair curl, a man homozygous recessive

for hair curl will produce: 50% straight hair & 50% curly hair

Com plants may be tall (TT or Tt) or short (tt). The breeding of two parent corn plants results in offspring that are allt

is the probability that both of the parents in this example are homozygous recessive?

A)

0%

Eliminate

Respuesta :

Answer:

1. Option A

2. 0%

Explanation:

A) Given Curly hair is dominant over straight hair.

Let the allele representing straight hair be "c"

and the allele representing curly hair be "C"

a) a woman heterozygous for hair curl, a man heterozygous for hair curl will

Cc * Cc

CC, Cc, Cc, cc

75 % curly and 25 % straight hairs

Hence, option A is correct

B) TT * Tt

When TT or Tt is crossed with tt, not all offspring will be tall

In order that all offspring are tall , the probability that both the parents must be homozygous recessive is 0%

In humans, curly hair is dominant over straight hair  so, the correct answer is A woman for hair curl, a man for hair curl will produce 25\% hair, 75% curly hair.

Using C as the allele for hair curl: Cc x Cc will the following genotypes: CC, Cc, Cc, cc25\% will be purebred dominant (curly hair)50% will be (curly hair)25% will be recessive (hair) combine with the curly hair genotypes since the question asked about phenotypes which result in 75% curly and 25\% straight.

What is an impure breed?

If the 2 are different, you've got got a genotype for that gene. For example, being for hair color should suggest you've got one allele for purple hair and one allele for brown hair. The courting among the 2 alleles influences which tendencies are expressed.

Thus it is clear that a woman for hair curl and a man for hair curl will produce 25% hair, and 75% curly hair.

To know more about genotype refer to the link :https://brainly.com/question/26671097