1. MONOHYBRID CROSS REVIEW

2. Unattached earlobes (E) is dominant to attached earlobes (e)
Unattached earlobes (E) is dominant to attached earlobes (e). If a male who is heterozygous marries a female who is homozygous recessive, what are the genotypic and phenotypic ratios of the F1 generation? e E
Genotypic Ratio: 2Ee: 2Ee Ee e ee
Phenotypic Ratio:
2 unattached: 2 attached e Ee ee

3. In rabbits, fluffy tails (T) are dominant to non-fluffy tails (t)
In rabbits, fluffy tails (T) are dominant to non-fluffy tails (t). If a male who is homozygous dominant mates with a female who is homozygous recessive, what are the genotypic and phenotypic ratios of the F1 generation? t t
Genotypic Ratio: 4Tt Tt T Tt
Phenotypic Ratio:
100% (4) fluffy tails T Tt Tt

4. If two of the offspring in the F1 generation from the previous question are crossed, what will the genotypic and phenotypic ratios of the F2 generation be? t T
Genotypic Ratio: 1TT:2Tt:1tt TT T Tt
Phenotypic Ratio:
3 fluffy tails: 1 non-fluffy tail t Tt tt

5. If a homozygous dominant and a heterozygous of the offspring in the F2 generation from the previous question are crossed, what will the genotypic and phenotypic ratios of the F3 generation be? t T
Genotypic Ratio: 2TT:2Tt TT T Tt
Phenotypic Ratio:
100% fluffy tails (4:0) T TT Tt