two fruit flies that are heterozygous for body color and eye color are crossed. brown body color is dominant…
two fruit flies that are heterozygous for body color and eye color are crossed. brown body color is dominant to black body color. red eye color is dominant to brown eye color. determine the genotypes of offspring 1 - 8.
Answer
Explanation:
Step1: Analyze cross - breeding
Two heterozygous fruit - flies (BbEe) are crossed. We use a Punnett square to determine genotypes.
Step2: Determine genotype for 2
The top - left cell (1) is BBEE. For the cell 2, the male gamete is be and the female gamete is BE, so the genotype is BbEe.
Step3: Determine genotype for 3
The male gamete is Be and the female gamete is Be, so the genotype is BBee.
Step4: Determine genotype for 4
The male gamete is bE and the female gamete is BE, so the genotype is BbEE.
Step5: Determine genotype for 5
The male gamete is bE and the female gamete is Be, so the genotype is BbEe.
Step6: Determine genotype for 6
The male gamete is bE and the female gamete is be, so the genotype is bbEe.
Step7: Determine genotype for 7
The male gamete is be and the female gamete is Be, so the genotype is Bbee.
Step8: Determine genotype for 8
The male gamete is be and the female gamete is be, so the genotype is bbee.
Answer:
- BbEe
- BBee
- BbEE
- BbEe
- bbEe
- Bbee
- bbee