Question

Рыжеволосая девушка выходит замуж за мужчину с не рыжими волосами, гомозиготного по этому признаку. какова вероятность рождения от этого брака ребёнка с не рыжими волосами, если известно, что рыжие волосы- рецессивный признак.

Answer 1

Женщина аа мужчина АА
Гаметы: а А
F1 Аа
100% вероятность рождения ребенка с не рыжими волосами

Answer 2

Probability of Child's Hair Color in Marriage

The probability of a child's hair color in a marriage where a red-haired woman marries a non-red-haired man, both being homozygous for this trait, can be determined using the principles of Mendelian genetics.

According to the provided information, red hair is a recessive trait. This means that for a child to have red hair, they must inherit two copies of the gene for red hair, one from each parent. Since the woman is homozygous for the red hair trait (having two copies of the gene for red hair) and the man does not have red hair, he must be homozygous for the non-red hair trait.

The Punnett square can be used to determine the probability of the child's hair color. In this case, since both parents are homozygous for the trait, the Punnett square will show that all offspring will have red hair.

Therefore, the probability of the child having non-red hair in this marriage is 0%.