Marriages between close relatives and cousins | vedclass

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(B) Marriages between close relatives and cousins are not advisable because recessive alleles for genetic disorders are often carried in a heterozygou

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More recessive defects are likely to appear

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(B) Marriages between close relatives and cousins are not advisable because recessive alleles for genetic disorders are often carried in a heterozygous state within a family. When close relatives mate,the probability of both parents carrying the same recessive allele increases significantly. This leads to a higher likelihood of offspring being homozygous for the recessive defect,causing the disorder to express itself.

Marriages between close relatives and cousins are not advisable because

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