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Multiple Choice
According to the textbook, _____ have greater odds of inheriting color-deficient vision than _____.
A
males; females
B
females; males
C
African Americans; whites
D
whites; African Americans
Verified step by step guidance
1
Understand the concept of sex-linked traits, which are traits associated with genes located on sex chromosomes. In humans, these are the X and Y chromosomes.
Recognize that color-deficient vision is often linked to the X chromosome, making it a sex-linked trait.
Recall that males have one X and one Y chromosome (XY), while females have two X chromosomes (XX).
Consider that if a male inherits an X chromosome with the gene for color-deficient vision, he will express the trait because he does not have a second X chromosome to potentially counteract it.
Understand that females would need to inherit two X chromosomes with the gene for color-deficient vision to express the trait, making it less likely for females to inherit color-deficient vision compared to males.