karls

Under sexual reproduction, the balance theory (or hypothesis) might be reasable. But under asexual reproduction, I doubt whether it holds on.

:doh:Thanks. If a parent cell begin to produce offspring, the chromosome is doubled, for example, before it divides into two daughter cells, its genotype is AaAa. I am not sure whether accidently two daughter cells' genotypes becomes AA and aa. Normally, under asexual reproduction, they should be Aa.

If yes, what is the prabobility of AA (A is wild-type allele, and a is mutant) appearring in F1? I guess P is not as large as 1/4 observed during free segragation, and it is likely a very rare exception.

Assume under asexual reproduction, an indivual with two alleles A and a at a locus begin to give birth to offsprings. At the next generation (F1), is there possibly an individual with genotype AA?