7. Hemophilia is a sex-linked recessive trait defined by the absence of a protein that promotes blood clotting. Hemophiliacs bleed excessively

when injured; in some cases, death results. Generally, the letters H and h represent the dominant and recessive alleles for hemophilia.
Since the trait is sex-linked, the genotype is always associated with the X and Y chromosomes. Therefore, for example, a normal female is XHXH or XHXh. Use the family tree/pedigree chart provided to answer the questions that follow:
a. What are the phenotypes of the P1 generation?
b. If parents 1 and 2 were to have another child, what is the probability of that child being hemophilic?
c. If parents 1 and 2 were to have a 2nd male child, what are its chances of being hemophilic?
d. What are the genotypes of 4 and 5?
e. Can any female offspring of normal parents develop hemophilia?

1 answer

yes I think so?

Did you know?

Did you know that hemophilia is a sex-linked recessive trait characterized by the absence of a protein that aids in blood clotting? Hemophiliacs experience excessive bleeding when injured, which can sometimes lead to death. In terms of genetics, the dominant and recessive alleles for hemophilia are represented by the letters H and h, respectively. Since the trait is sex-linked, it is always associated with the X and Y chromosomes. This means that a normal female can have the genotypes XHXH or XHXh. By using a family tree/pedigree chart, you can answer various questions about the phenotypes and genotypes of individuals, as well as determine the likelihood of certain individuals being hemophilic. Additionally, it is important to note that while male offspring have a chance of being hemophilic, female offspring of normal parents cannot develop hemophilia.