Mrs. Verma has a pair of autosomal genes 'Bb' | vedclass

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(A) Mrs. Verma's genotype for the autosomal genes is $Bb$. The probability of a gamete receiving '$b$' is $1/2$.Since the gene '$d$' is $X$-linked,we

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$1/2$ or $50\%$

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(A) Mrs. Verma's genotype for the autosomal genes is $Bb$. The probability of a gamete receiving '$b$' is $1/2$.Since the gene '$d$' is $X$-linked,we assume she is homozygous '$dd$' for the $X$-linked trait (as implied by the notation '$dd$').Therefore,every $X$ chromosome she passes on will carry the '$d$' allele,meaning the probability of a gamete receiving '$d$' is $1$.The probability of a gamete receiving the combination '$bd$' is calculated by multiplying the independent probabilities: $P(b) 	imes P(d) = 1/2 	imes 1 = 1/2$.Thus,$50\%$ of the gametes will contain the genes '$bd$'.

Mrs. Verma has a pair of autosomal genes '$Bb$' and she also carries an $X$-linked gene '$dd$'. What will be the percentage of gametes that contain the genes '$bd$'?

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