Answer:
Phenotype refers to the physical trait, but since there's no trait given I assume that we have to determine whether it is homozygous dominant/recessive or heterozygous.
Heterozygous if it expresses two different alleles (ex. Aa, Bb, Cc)
Homozygous if it expresses two identical alleles (ex. AA, aa, BB, bb)
Dominant is a trait that is always expressed and generally represented by uppercase letters (ex. AA, BB, CC)
Recessive traits are those traits that can be dominated and will only show if two identical lowercase letters are present (ex. aa, bb, cc)
- RR - Homozygous dominant
- Rr - Heterozygous
- rr - Homozygous recessive
- YY - Homozygous dominant
- Yy - Heterozygous
- yy - Homozygous recessive
- II - Homozygous dominant
- Ii - Heterozygous
- ii - Homozygous recessive
- PP - Homozygous dominant
- Pp - Heterozygous
- pp - Homozygous recessive
- AA - Homozygous dominant
- Aa - Heterozygous
- aa - Homozygous recessive
- TT - Homozygous dominant
- Tt - Heterozygous
- tt - Homozygous recessive
- GG - Homozygous dominant
- Gg - Heterozygous
- gg - Homozygous recessive