Question

choose all of the genotypes that represent an offspring that is able to taste the chemical ptc?
□ tt
□ tt
□ tt

Explanation:

Step1: Recall PTC tasting genetics

PTC tasting is a dominant trait, so the dominant allele (T) is responsible for tasting. Genotypes with at least one T (TT or Tt) show the tasting phenotype. The recessive genotype (tt) is for non - tasting.

Step2: Evaluate each genotype

• For "tt": This is a homozygous recessive genotype. Since the tasting trait is dominant, individuals with "tt" cannot taste PTC.
• For "TT": This is a homozygous dominant genotype. Individuals with "TT" have the dominant allele, so they can taste PTC.
• For "Tt": This is a heterozygous genotype. Since the dominant allele (T) is present, individuals with "Tt" can taste PTC.

Answer:

TT, Tt (the checkboxes corresponding to "TT" and "Tt" should be selected)