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Slightly greater than 50%

Chromosomes of Father are X & Y

Chromosomes of Mother are X" & X'

Chromosomes of offspring are: -

X"X ( Female)

X"Y ( Male)

X'X ( Female)

X'Y ( Male)

Hence out of four possibilities of offspring , two are female and two are male.

P(F) = 2/4 = 1/2 = 0.5 = 50%

P(M) = 2/4 = 1/2 = 0.5 = 50%

Hence probability of M/F is 50/50 .

However, finer biological/statistical research has shown that females have a greater probability of survival at birth. Hence P(F) = 50+% ( 51%).

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lenpollock

Lvl 17
1w ago

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