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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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6 years ago
Why is it that human males and females who are both heterozygous for the pattern-baldness gene have different phenotypes (males are bald, females are not bald)?
 
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6 years ago
Pattern baldness is an example of a sex-influenced trait. Males and females do not express the gene in the same way. Pattern baldness is controlled by an autosomal gene that acts as a dominant in males and as a recessive in females. The b/b genotype results in baldness in both sexes, the b+/b+ phenotype results in nonbaldness for both sexes, and the b+/b genotype results in baldness in males but nonbaldness in females.
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