Предмет: Биология, автор: kom384

У людини гемофілія- рецесивна алель, локалізована в Х-хромосомі. Яка ймовірність народження хворих дітей, у хворого батька, а мати здорова і не має хворих родичів на це захворювання?

Ответы

Автор ответа: Juliaspeshbond

Дано:

А - гемофілія

а - нормальне зсідання крові

Знайти:

F1 - ?

Рішенння:

Р: ХНХН * ХhY

G: XH Xh Y

F1: XHXh, XHY

Відповідь: ймовірність народження хворих дітей - 0%

Объяснение:

Гетерозигота - это 2 разных алеля в генотипе (например, ХНXh)

Гомозигота - это 2 одинаковых алеля в генотипе, доминантных или рецессивных, (ХНХН - доминантная гомозигота, ХhXh - рецессивная гомозигота.

Доминантный алель подавляет действие рецессивного алеля, и в фенотипе рецессивный алель не проявляется.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: dzhansarinovaardak

Choose the correct option. LOOK, WATCH AND SEE 1 Tom looked/watched/saw at the clock on the wall. 2 Tom looked/watched/saw out of the window. 3 I always look/watch/see the weather report before going out in the morning. 4 On a clear day, we can look/watch/see Mt. Fuji in the distance. 5 "What are you doing?" "I'm looking / watching / seeing my plants grow." 6 What animals can you look/watch/see in this picture? 7 That girl over there is looking / watching / seeing at you. 8 I stopped and looked / watched/saw behind me. 9 I look / watch / see on him as my best friend. 10 Tom usually looks/ watches/sees the news while he's eating dinner. 11 As you can look/watch/see, the roof needs to be replaced. 12 We were surprised when we looked / watched/saw him in the office this morning. 13 Tom looked/watched/saw in the fridge to see what he could find to drink. 14 My grandmother loves looking / watching/seeing TV. 15 Look/Watch/See me and tell me what I'm doing wrong. 16 I fell in love with Mary the first time I looked / watched/saw her. 17 I entered Tom's bedroom and looked / watched/saw him asleep in his bed. 18 She put on her sister's jeans and looked / watched/saw in the mirror. 19 She has a tendency to look/watch/see on the dark side of things. 20 The police looked / watched/saw in Tom's locker, but didn't find anything. 21 Do you like going to the cinema or do you prefer looking / watching/seeing television at home? 22 She was looking / watching/seeing at a beautiful flower. 23 When he heard the voice, he looked / watched / saw out of the window. 24 I looked / watched / saw in as many dictionaries as I could. 25 Tom stayed at home on Tuesday to look/watch/see a Viking documentary. 26 Tom can look/watch/see very well without his glasses. 27 Tom told me that he can look/watch/see ghosts. 28 Tom looked/watched/saw in the box to see what was inside. 29 I'm going to look/watch/see football. 30 Tom has changed a lot since the last time I looked/watched/ saw him.

1 год назад

Предмет: Английский язык, автор: pinasolova

Вставте say, speak, tell, talk

1 год назад

Предмет: Математика, автор: alinsik69

Зведи до знаменника 36 кожний із дробів 1)2/9 2)3/4 3)7/12 4)1/6