Uploaded by Megan White

Sex linked Test

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Name:___________________________________________
Date:
Sex-linked Traits Test
1. Female sex chromosomes are represented by: ________ _________
2. Male sex chromosomes are represented by: _________ __________
3. Color-blindness is an X linked recessive trait that is represented by using the letter D. Brenda is
heterozygous for color-blindness. She marries Carlos who has normal vision. Complete the Punnett
square below:
Brenda: _______ ________ x Carlos: _______ ________
What is the probability of having a female who is NOT colorblind? ______/4
_______%
What is the probability of having a female who is IS colorblind? ______/4
_______%
What is the probability of having a Male who is NOT colorblind? ______/4
_______%
What is the probability of having a male who is IS colorblind? ______/4
_______%
4. Color-blindness is an X linked recessive trait that is represented by using the letter D. Brenda is a
carrier for color-blindness. She marries Carlos who is colorblind. Complete the Punnett square
below:
Brenda: _______ ________ x Carlos: _______ ________
What is the probability of having a female who is NOT colorblind? ______/4
_______%
What is the probability of having a female who is IS colorblind? ______/4
_______%
What is the probability of having a Male who is NOT colorblind? ______/4
_______%
What is the probability of having a male who is IS colorblind? ______/4
_______%
5. Color-blindness is an X linked recessive trait that is represented by using the letter D. Brenda is
homozygous dominant for color-blindness. She marries Carlos who is colorblind. Complete the
Punnett square below:
Brenda: _______ ________ x Carlos: _______ ________
What is the probability of having a female who is NOT colorblind? ______/4
_______%
What is the probability of having a female who is IS colorblind? ______/4
_______%
What is the probability of having a Male who is NOT colorblind? ______/4
_______%
What is the probability of having a male who is IS colorblind? ______/4
_______%