Question

Dominant (TT) allele produces tall phenotype; homozygous recessive (tt) produces short phenotype. In a cross between homozygous recessive (tt) and tall parents(TT), in this test cross, the offspring may tell you what the tall parent's genotype is.
If you have 9 offspring and the offspring are all tall. Then the tall parent's genotype is

a. Definitely TT
b. Probably TT
c. Definitely Tt
d. Probably Tt
e. Definitely tt
f. Probably tt

Answer 1

It's probably B

Answer 2

was that a guess or

Answer 3

there are no definites in genetics, unless you have more of the pedigree. B is the correct answer, since it is a possibility that if at least one of the parents has the dominant allele, that all of the kids would be tall. but it is unlikely, so your answer is B

Answer 4

Ohhh okayy

Answer 5

Thanks(: