Question: Identical twins come from a single egg that split into twoembryos, and fraternal twins are from separate fertilized eggs.Also, identical twins must be of the

Identical twins come from a single egg that split into twoembryos, and fraternal twins are from separate fertilized eggs.Also, identical twins must be of the same sex and the sexes are equallylikely, and sexes of fraternal twins are equally likely. Use the data table to complete parts(a) and(b) below.

Sexes of Twins

boy/boy boy/girl girl/boy girl/girl

Identical Twins 10 0 0 10

Fraternal Twins 9 9 9 9

a. After having asonogram, a pregnant woman learns that she will have twins. What is the probability that she will have identicaltwins?

The probability is ?

b. After studying the sonogram moreclosely, the physician tells the pregnant woman that she will give birth to twin boys. What is the probability that she will have identicaltwins? Thatis, find the probability of identical twins given that the twins consist of two boys.

The probability is ?

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