Question

the tall allele, t, is dominant to the short allele, t in mendel’s pea plants. you examine a pea plant that exhibits the tall phenotype. what is its genotype? select all that apply.
a) tt

b) tt

c) tt

Explanation:

In Mendelian genetics, a dominant allele (T for tall) masks the recessive allele (t for short). A tall phenotype can be expressed by a homozygous dominant genotype (TT) or a heterozygous genotype (Tt) because the dominant allele T will be expressed. The homozygous recessive genotype (tt) expresses the short phenotype, so it is excluded.

Answer:

A. TT
B. Tt