AP BIOLOGY

HEREDITY

MONOHYBRID CROSS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A woman with curly hair mated with the man who is heterozygous for straight hair. Create a Punnett square to determine the possible genotypes?
A
heterozygous & homozygous recessive
B
homozygous dominant & homozygous recessive
C
heterozygous
D
heterozygous & homozygous dominant
Explanation: 

Detailed explanation-1: -Incomplete Dominance: Wavy hair is an intermediate phenotype between straight and curly hair. The presence of an intermediate phenotype means that it is an example of incomplete dominance.

Detailed explanation-2: -A person who is homozygous dominant HH has curly hair and they mate with a person who has straight hair (homozygous recessive hh).

Detailed explanation-3: -of inheriting the gene for curly hair and a 50% chance of inheriting the gene for straight hair.

Detailed explanation-4: -Curly hair is considered a “dominant” gene trait. Straight hair is considered “recessive.” To put that in simple terms, that means that if one parent gives you a curly-haired gene and the other parent gives you a straight-haired gene, you’ll be born with curly hair.

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