Question

which of these genotypes represent a homozygous dominant trait?
○ tt
○ tt
○ tt
question 7
1 pts
which of these genotypes represent a heterozygous dominant trait?
○ tt
○ tt
○ tt

Explanation:

First Question (Homozygous Dominant)

To determine a homozygous dominant genotype, we recall that homozygous means having two identical alleles, and dominant alleles are typically represented by uppercase letters. A homozygous dominant genotype has two dominant alleles (e.g., \( TT \), where \( T \) is dominant). The option \( Tt \) is heterozygous (different alleles), and \( tt \) is homozygous recessive (two recessive alleles). So \( TT \) is homozygous dominant.

A heterozygous genotype has two different alleles. For a dominant trait, the heterozygous genotype will have one dominant (uppercase) and one recessive (lowercase) allele. \( TT \) is homozygous dominant, \( Tt \) has one \( T \) (dominant) and one \( t \) (recessive), so it's heterozygous dominant, and \( tt \) is homozygous recessive.

Answer:

A. \( TT \)

Second Question (Heterozygous Dominant)