If the intermediate F1 progeny were allowed to self-pollinate, and 25% of the F2 progeny were tall, 50% were?

If the intermediate F1 progeny were allowed to self-pollinate, and 25% of the F2 progeny were tall, 50% were intermediate in size, and 25% were short, this would suggest








a. incomplete dominance.





b. polygenic inheritance.





c. complete dominance.





d. pleiotropy.





d. multifactorial inheritance.

If the intermediate F1 progeny were allowed to self-pollinate, and 25% of the F2 progeny were tall, 50% were?
Assuming one allele is responsible for the trait and parents are homozygous...





P: AA x aa


F1: Aa


F2:1 AA:2Aa:1aa





If complete dominance, then you would see 3:1 tall to small ratio and no intermediates. Incomplete dominance satisfies the 1:2:1 ratio observed.
Reply:Some of the branches in your family tree are long, some are short and you have a small handful of under-developed twigs.


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