Sex-linked traits Knowledge-Based Practice

Biology · Heredity · Biology · Non-Mendelian Genetics

1 Biology practice questions on Sex-linked traits. Questions that assess core concepts and understanding.

Layout:

Choose how questions appear in the preview and test.

Preview the questions below, then start to answer and see your results.

Questions

  1. 1.

    A woman who is a heterozygous carrier for the X-linked recessive allele for hemophilia (XHXhX^H X^h) has children with an unaffected man (XHYX^H Y). What is the probability that a son born to this couple will have hemophilia?

    • A) 50%
    • B) 25%
    • C) 0%
    • D) 100%

Answers and step-by-step solutions appear after you finish the test.