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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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lastyr lastyr
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8 years ago
How can two parents with only one round allele between them (1 out of 4 alleles) produce an F1 generation in which 50% of individuals have round seeds? What appears to be the inheritance pattern for seed shape?
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Educator
8 years ago
Let's assume that the allele for round character of seeds is represented as R.

Dominant would be R

Recessive allele would be r.

So the parent with one Dominant R allele would have the genotype "Rr" (heterozygous Round, since round is dominant over wrinkled)

The other parent has two recessive r alleles, so the genotype would be "rr" (homozygous wrinkled)

So the cross would be Rr x rr

In the resulting offsprings, 50% would be "Rr" and 50% would be "rr"

so, 50% round, 50% wrinkled.
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