каковы фенотипы детей от брака женщины дальтоника со здоровым мужчиной?

каковы фенотипы детей от брака женщины дальтоника со здоровым мужчиной?
- Предмет:
  Биология
- Автор:
  andre88
- 5 лет назад

Ответы 1

Ген дальтонизма (а) - рецессивный, сцепленный с Х-хромосомой.
Таким образом генотипы родителей (P): мать - X(a)X(a) отец - XY или X(a)Y (так как о родителях отца ничего не сказано и он может быть носителем)
Гаметы (G): мать - X(a), отец - X или Y ( X(a) или Y)
Дети (Fb): X(a)X - девочка-носитель, X(a)Y - мальчик-носитель (1:1) или X(a)X(a) - девочка-дальтоник, X(a)Y - мальчик-носитель.
- Автор:
  turner38
- 5 лет назад
- 0
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