QUESTION IMAGE
Question
- complete the data table below:
| genotype | phenotype | name of allele combination (heterozygous/homozygous dom or rec) | ---- | ---- | ---- | ee | earlobes unattached | rr | right handed | ff | no freckles | tt | tongue rolls |
Step1: Define allele combination terms
Heterozygous = 1 dom +1 rec allele. Homozygous dom = 2 dom alleles. Homozygous rec = 2 rec alleles.
Step2: Analyze Ee genotype
E (dom) + e (rec) → heterozygous
Step3: Analyze RR genotype
2 dominant R alleles → homozygous dominant
Step4: Analyze ff genotype
2 recessive f alleles → homozygous recessive
Step5: Analyze Tt genotype
T (dom) + t (rec) → heterozygous
| Genotype | Phenotype | Name of Allele Combination (Heterozygous/homozygous dom or rec) |
|---|---|---|
| RR | Right handed | Homozygous dominant |
| ff | No freckles | Homozygous recessive |
| Tt | Tongue rolls | Heterozygous |