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Explain the inheritance of sex influence...

Explain the inheritance of sex influenced characters in human beings.

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Sex influenced genes are the autosomal genes present in both males and females in sex influenced inheritance, the genes behave differently in the two sexes, because the sex hormones provide different cellular environment in males and females Eg: Baldness in humans.
THe allele for baldness behave dominant (B) in males but recessive (b) in females. Pattern of baldness in man

If a heterozygous non-bald woman (Bb) married a heterozygous bald man (Bb) in the offpsing the ratio of bald to non bald in the male progeny is 3:1 while in females it is `1:3`
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