If a haemophiliac male and female carrying the gene for haemophilia marry and decide to have children. what are the probable genotypes and phenotypes of their offspring? what advice can you give to these parents regarding their future offspring?
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Answer:
A person’s genes provide the instructions on how to make proteins, such as factor VIII and factor IX. In people with hemophilia, there is a mutation (difference from normal) in either the gene for the factor VIII protein or the gene for the factor IX protein. The mutation causes the body to produce too little factor VIII or IX. This change in a copy of the gene making factor VIII or factor IX is called a hemophilia allele.