Question

question 1
0 points
a testcross between a pea plant showing the dominant tall phenotype and a \tester\ strain showing the recessive short phenotype produces 100% tall progeny. the tall parent was a tt heterozygote.
true
false
clear selection

Explanation:

A testcross involves crossing an individual with an unknown genotype (dominant phenotype) with a homozygous recessive individual. If the tall parent were Tt (heterozygous), the cross would be $Tt \times tt$. The offspring genotypes would be 50% $Tt$ (tall) and 50% $tt$ (short). For 100% tall progeny, the tall parent must be homozygous dominant ($TT$), not heterozygous.

Answer:

False