4. Chris and Emma are phenotypically normal but carriers for SCA (gene A). a. What are their genotypes? b. With respect to gene A, what are the possible genotypes of the gametes that they can produce. Chris: Emma: In front of each gamete genotype above write probability of producing that gamete. c. What is the probability that Chris and Emma will have a child affected with SCA? (affected=has the disease="aa" =homozygous recessive) d. Write the cross and draw the Punnett square that demonstrates this. X e. The phenotypic ratio is The genotypic ratio is normal : AA: affected Aa: aa

4. Chris and Emma are phenotypically normal but carriers for SCA (gene A). a. What are their genotypes? b. With respect to gene A, what are the possible genotypes of the gametes that they can produce. Chris: Emma: In front of each gamete genotype above write probability of producing that gamete. c. What is the probability that Chris and Emma will have a child affected with SCA? (affected=has the disease="aa" =homozygous recessive) d. Write the cross and draw the Punnett square that demonstrates this. X e. The phenotypic ratio is The genotypic ratio is normal : AA: affected Aa: aa

Name: 4. Chris and Emma are phenotypically normal but carriers for SCA (gen
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Description: 4. Chris and Emma are phenotypically normal but carriers for SCA (gene A).a. What are their genotypes?b. With respect to gene A, what are the possible genotypes of the gametes that theycan produce.Chris:Emma:In front of each gamete genotype above wr

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter14: Human Inheritance

Section: Chapter Questions

Problem 2GP: Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect...

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