Question

Question No. 7
A study was conducted on the hair type and eye colors of individuals. A group of 110 girls was surveyed. They have straight or curly hair and are blue or brown-eyed. If 36 are blue-eyes
with straight hairs, 38 have curly hair and 49 are brown-eyed, then the number of brown-eyed girls with curly hair is
014
13
0 12
10​

Answer 1

Here is your answer:

In man, blue eyes are recessive and brown ones are dominant.

In case of human males - XY (Only X chromosome can carry genes, but Y cannot)

In case of human females - XX (Both X chromosomes will carry genes)

If the son is having Brown eyes, his expected genotype is XB Y

Genotype of mother with blue eyes is XbXb

Thus the genotype of father has to contain one B gene which had transferred to the offspring.

Genotype of father is XB Y- Phenotype is brown eyes

I hope it helps you

Step-by-step explanation:

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Answer 2

Answer:

13

110- 38

72 straight hairs

72-36

36 brown eyes straight hair

49-36

13 brown eyes curvy hair