Question

6. Hemophilia is a sex-linked trait. A person with hemophilia is lacking certain proteins that are necessary for normal blood clotting. Hemophilia is caused by a recessive allele so use "XH” for normal and "Xh" for hemophilia. Since hemophilia is sex-linked, remember a woman will have two alleles (XX) but a man will have only one allele (XY). A woman who is heterozygous (a carrier) for hemophilia marries a normal man: a. What are the genotypes of the parents? b. What is the probability that a male offspring will have hemophilia? 7. Write the genotype for each person based on the description: a. Homozygous for the "B" allele b. Heterozygous for the "A" allele c. Type o d. Type "AB" a. Could two individuals with type A blood ever produce offspring with Type O blood? Explain with Punnett square.

Answer 1

Answer:

Page 1 Hemophilia is a sex - linked trait, A person with hemophilia is lacking certain proteins that are necessary for normal blood clothing . Hemophilia is caused by a recessive allele SO - allere for normal - XN and allele for hemophilia x² Genotype Phenotype XNXN Normal female Carrier but normal female tnxn hemophilic female XNY Normal male хү hemophilic male N is heterozygous hemophilia mories a. A woman who (a carrier) or normal man - (a) so genotype of woman is x y and genotype of man is XNY

b):

. . Male offspring » Normal male on offspring — I L Hemophilic male offspring so. Probability of that a more will have hemophilia a offspring 0.