Principle of Inheritance and VariationMedium
Question
A family of five daughters only is expecting sixth issue. The chance of its berings a son is
Options
A.Zero
B.25%
C.50%
D.100%
Solution
In human beings there are 22 pairs of autosome and one pair of sex chromosome. Female is homozygous while male is heterozygous and genetically responsible foe sex of the child. Sperms are of two types :
Sperms having X-chromosome responsible for producing a girl and sperms having Y-chromosome responsible for producing a boy. Chances of a baby to be either boy or girl is always 50%
Sperms having X-chromosome responsible for producing a girl and sperms having Y-chromosome responsible for producing a boy. Chances of a baby to be either boy or girl is always 50%
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