Question

# Identical twins come from a single egg that split into two​ embryos, and fraternal twins are...

Identical twins come from a single egg that split into two​ embryos, and fraternal twins are from separate fertilized eggs.​ Also, identical twins must be of the same sex and the sexes are equally​ likely, and sexes of fraternal twins are equally likely. If a pregnant woman is told that she will give birth to fraternal​ twins, what is the probability that she will have one child of each​ sex? Use the data table below to find the probability. Sexes of Twins ​boy/boy ​boy/girl ​girl/boy ​girl/girl Identical Twins 6 0 0 6 Fraternal Twins 2 4 4 2

Given That:-

Identical twins come from a single egg that split into two​embryos, and fraternal twins are from separate fertilized eggs.​Also, identical twins must be of the same sex and the sexes are equally​ likely, and sexes of fraternal twins are equally likely. If a pregnant woman is told that she will give birth to fraternal​twins, what is the probability that she will have one child of each​ sex? Use the data table below to find the probability.

 Boy/Boy Boy/Girl Girl/Boy Girl/Girl Total Identical Twins 6 0 0 6 12 Fraternal Twins 2 4 4 2 12 Total 8 4 4 8 24

P(Fraternal Twins with different sex)

=P(Fraternal Twins Boy/Girl) + P(Fraternal Twins Girl/Boy)

= 4/24 + 4/24

= 1/3

P(Fraternal Twins with different sex) = 0.33

Therefore This is the required Probability.

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