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1. A student is completing a Punnett square for a trait (X/x) that is autosomal and inherited by the dominant allele. The father does not have it (xx), but the mother does (Xx). If they had two children, a son and a daughter, what would the completed Punnett square look like (i.e., would the son have the trait, would the daughter have the trait)?

A. Both children would not inherit the trait.

B.Both children would inherit the trait.

C. Each child has a 50% chance of inheriting the trait.

D. One child would inherit the trait and one child would not.

Respuesta :

Answer:

C

Explanation:

autsomsal means that it is not x-linked/ realted to gametes. Dominate means that it needs only one X to get the trait

Using the punnet square

             X       x

      x     Xx   xx

      x     Xx   xx

there is 2 X which means there is a 50% change that their child will get the trait

In the punnett square analysis, each child has a 50% chance of inheriting the trait.

The mother Xx has the trait and the father xx doesn't.

Using the punnet square

Xx                 xx

Xx   Xx  xx  xx

There are just two traits which are Xx and xx which are in equal frequency

and proportion.

This therefore means that the children have a 50% chance of getting the trait.

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