Предмет: Биология, автор: andrieshr

При скрещивании растения томата с красными шаровидными плодами (доминантные признаки) с растением, имеющим желтые грушевидные плоды(рецессивные признаки) получили потомство, половина которого имела красные шаровидные плоды, а вторая половина-желтые грушевидные плоды. Определите генотипы родителей и потомков. Укажите, какой закон наследования проявляется, Дать полный развернутый ответ.  

Ответы

Автор ответа: gritsienkolena
0
A-красные
а-желтые
В-шаровидные
в-грушевидные
Р: АаВв * аавв (красн. шар.) * (желт.груш)
G: АВ, ав,Ав,аВ; у второго родителя ав
F1: АаВв - красные шаровидные
      аавв - желтые грушевидные
т.к. в потомстве есть особи с двумярецессивными признаками, то родитель с доминантным фенотипом - гетерозигота. Потомок с рецессивным фенотипом получает по одной аллели от каждого из родителей. Проявляется два закона Менделя: закон расщепления и закон независимого наследования признаков
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