Предмет: Биология, автор: h208et

Скрестили синего попугайчика( ААвв) с желтым( ааВВ). Потомки в первом поколении были все зелеными. Во втором поколении произошло расщепление попугайчиков на зеленых, желтых , синих и одного белого. Определите генотипы родителей и потомков. Определите соотношение расщепления признаков во втором поколении по фенотипу.

Ответы

Автор ответа: vendy77

P: AAbb(синий) x aaBB(желтый)

F1:AaBb(зеленый)

F2:по решетке Пеннета, т.е.

AABB AABb AaBB AaBb

AABb AAbb AaBb Aabb

AaBB AaBb aaBB aaBb

AaBb Aabb aaBb aabb

расщепление признаков во втором поколении по фенотипу будет 9:3:3:1

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