What is the expected outcome for the daughters in a cross between a normal male and a carrier female for a sex-linked trait?

Explore the Mendelian Link Test. Study with questions and explanations, comprehend Mendel's principles, genetic inheritance, and related concepts. Prepare confidently for your exam!

In a cross between a normal male and a carrier female for a sex-linked trait, particularly one located on the X chromosome, we can analyze the expected outcomes for their daughters.

A carrier female has one normal X chromosome and one affected X chromosome (X^NX^n), while the normal male has one normal X chromosome and one Y chromosome (X^NY). The daughters receive one X chromosome from each parent. Thus, from the father, every daughter will inherit the normal X chromosome (X^N), and from the mother, they can inherit either the normal X chromosome (X^N) or the affected X chromosome (X^n).

The possible combinations for the daughters are as follows:

  1. Inheriting the normal X from the father and the normal X from the mother (X^N/X^N), resulting in daughters who are normal.

  2. Inheriting the normal X from the father and the affected X from the mother (X^N/X^n), resulting in daughters who are carriers.

In this scenario, there are two equally likely outcomes: half of the daughters will be normal (X^N/X^N) and half will be carriers (X^N/X^n). This leads us to

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