Color Blindness Is a Sex-Linked Trait

question 7

Multiple Choice

Color blindness is a sex-linked trait. As such, if a child is color blind, we can be assured that the child's genotype includes:

• A) a recessive gene on the X chromosome inherited from his mother
• B) a dominant gene on the X chromosome inherited from his mother
• C) a recessive gene on the Y chromosome inherited from his father
• D) a dominant gene on the X chromosome inherited from his father