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Which pedigree symbol is used to represent a female carrier of a recessive X-linked trait?

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Sagot :

Final answer:

The symbol used to represent a female carrier of a recessive X-linked trait in a pedigree is TIME, such as in Duchenne Muscular Dystrophy. Females can be carriers of X-linked traits without showing symptoms and pass them to their offspring. Males are more likely to be affected by X-linked traits due to having one X chromosome.


Explanation:

The pedigree symbol used to represent a female carrier of a recessive X-linked trait is TIME. In X-linked inheritance, females can be carriers of a recessive trait on one of their X chromosomes without showing symptoms. This means they can pass the trait to their offspring.

For example, in Duchenne Muscular Dystrophy (DMD), females can be carriers of the disease and pass it on to their sons who have a 50% chance of being affected. Daughters of carriers have a 50% chance of being carriers themselves.

Male offspring are more likely to be affected by X-linked recessive traits due to having only one X chromosome, while females need to inherit two copies to exhibit the trait.


Learn more about X-linked Inheritance here:

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