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True or False:  If a male has an X-linked dominant genetic condition, all of his daughters will...

True or False:  If a male has an X-linked dominant genetic condition, all of his daughters will have the condition.

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Answer #1

True. If a male has an X-linked dominant genetic condition, all of his daughters will have the condition.

The X chromosome in daughters is from the male parent and the other X is from the mother, since they have XX there is no chance that they may escape an X-linked dominant condition. Unlike daughters, sons tend to inherit their X from mother and Y from father. So sons won’t get affected here.

Thus there will be no transmission to sons and 100% transmission to daughters.

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