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Explain that female carriers are heterozygous for X-linked recessive alleles.

·      An individual with a recessive allele for a disease condition that is masked by a normal dominant allele is said to be a carrier

·      Carriers are heterozygous and can potentially pass the trait on to the next generation, but do not suffer from the defective condition themselves

·      Females can be carriers for X-linked recessive conditions because they have two X chromosomes - males (XY) cannot be carriers

Zana Katarina L. IB Biology tutor, IB Maths tutor, IB Psychology tutor

2 years ago

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