A couple goes to a genetic counselor before deciding to have ababy. The genetic

Question

A couple goes to a genetic counselor before deciding to have ababy. The genetic counselour informs them that the wife is a carriefor a recessive disorder that causes deafness. The husband is notdeaf. 1. Create a punnet square using X( H on top of the x likesquaring something) for normal hearing and X( h on top pf the xlike squaring something) for deafness 2. What are their chances of having a child withdeafness? A couple goes to a genetic counselor before deciding to have ababy. The genetic counselour informs them that the wife is a carriefor a recessive disorder that causes deafness. The husband is notdeaf. 1. Create a punnet square using X( H on top of the x likesquaring something) for normal hearing and X( h on top pf the xlike squaring something) for deafness 2. What are their chances of having a child withdeafness?

Explanation / Answer

So you make the box (2x2 square). On top of the top boxes youput the genetic code for the mother (XH Xh)because she's a carrier and on the side, you put the father'sgenetic code (XH Xh) (this is of course onlyif the father is not a carrier, which is what i am assuming) Thenin the the top left box you put XHXH, onefrom each parent. Then you do the same for the rest of the boxes,putting one from each parent in the boxes. There is a 25% chance the child will be deaf(XhXh). hope this helps!

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