Whats the genotype of a male with hemophilia?
A female carrier of hemophilia x A male The male had the genotype XHY0, and produced the two gametes seen at the right side of the diagram. One male and one female offspring inherit normal genes. One female is heterozygous for the hemophilia trait and is considered a carrier.
Is the hemophilia dominant or recessive?
Hemophilia is a sex-linked recessive disorder. The abnormal gene responsible for hemophilia is carried on the X chromosome.
What is the genotype of a male with normal blood clotting?
7. The genotypes of the males in a pedigree for sex-linked inheritance are easy to determine since normal blood clotting (N) is dominant and hemophilia is recessive (n). Since these alleles are on the X chromosome only, a male represented by a clear square will have the genotype XNY. A darkened square will be X”Y.
Which genotype shows a woman who has hemophilia?
Explanation: A female with hemophilia would have to have her 2 sex chromosomes (the two X’s), or pair 23, with the hemophilia alleles. Those alleles cannot be the ‘normal’ or dominant allele (we’ll call it ‘H’).
Does a carrier mean you have the disease?
If a person has only one gene for a disorder, he or she is known as a carrier. Carriers often do not know that they have a gene for a disorder. They usually do not have symptoms or have only mild symptoms.
What is a carrier male?
= A carrier is an individual who carries and is capable of passing on a genetic mutation associated with a disease and may or may not display disease symptoms. Carriers are associated with diseases inherited as recessive traits.
Who carries the muscular dystrophy gene?
DMD is inherited in an X-linked pattern because the gene that can carry a DMD-causing mutation is on the X chromosome. Every boy inherits an X chromosome from his mother and a Y chromosome from his father, which is what makes him male. Girls get two X chromosomes, one from each parent.
Why are females carriers and not males?
This is due to the fact that, in general, females carry two X chromosomes (XX), while males carry one X and one Y chromosome (XY). Therefore, females carry two copies of each X-linked gene, but males carry only one copy each of X-linked and Y-linked genes. Females carry no copies of Y-linked genes.