Punnet Square 6. Claud has hereditary rickets, an X-linked dominant disorder. If his partner does not have this

condition, then ... a. If this couple has a son, then what are his chances of having hereditary

rickets? b. If this couple has a daughter, then what are her chances of having hereditary rickets?

a) the son will not be affected by rickets (0% chance)

b) the daughter will have rickets (100% chance)

Explanation:

Since only the father has rickets and it is a X-linked dominant trait, the mother has two normal X chromosomes. The X chromosome received from the mother by the son will not result in the rickets since the father will have contributed the Y chromosome and that does not have the gene for rickets. In case of the daughter, she will receive the defective X chromosome from her father, which will cause her to have the rickets disease.

Hope that answers the question, have a great day!

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.