Reference no: EM132486076
Also need help one these multi punned squares questions in word there are 4x4 and I get confused because my teacher didn't have a video on this
1. In fruit flies, the allele for red eyes is dominant over the allele for pink eyes. Straight wings are dominant over curled wings. Imagine that a red-eyed, straight-winged fly that is heterozygous for both traits is crossed with a fly with pink eyes and curled wings. Predict the offspring that would be produced by this cross (genotypes, phenotypes, and probability of each).
2. Now consider a homozygous red eyed, curly winged fly with a pink eyed, heterozygous straight winged fly. Predict the offspring that would be produced by this cross (genotypes, phenotypes, and probability of each).
3. Two parents, both with blood type.A, have six children who have blood type.A. One of the offspring fathers a child with blood type O. What can you tell about the genotypes of the two parents and all their offspring? Draw a pedigree chart and explain your answer.
4. In some chickens, the gene for feather color is controlled by codominance. The allele for black is CB and the allele for white is CW. The heterozygous phenotype is known as erminette (black and white spotted).
- What is the genotype for black chickens? ________
- What is the genotype for white chickens? ________
- What is the genotype for erminette chickens? ________
Two erminette chickens were crossed. Show the Punnett square. List the phenotypic and genotypic ratios of the offspring.
5. A black chicken and a white chicken are crossed. Show the Punnett Square. What is the probability that they will have erminette chicks?