7. Instead of one big square it is much easier to make two small Punnett squares, one for each gene. In the space at the bottom of page, draw the two squares (from 4d and 5b on previous page). Indicate the phenotypic ratios for each square and then multiply to get the combined probabilities. For example, the probability of having both diseases requires multiplying the probability of each event. a. Is the inheritance of an "A" or "a" allele dependent on (or affected by) the inheritance of a "B" or b" allele? Why or why not? (hint: Which of Mendel's Laws is involved?) h What is the chance that their child will be phenotypically normal (for both genes)?

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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# Genetics Problem Set

7. Instead of one big square, it is much easier to make two small Punnett squares, one for each gene. **In the space at the bottom of the page, draw the two squares** (from 4d and 5b on the previous page). Indicate the phenotypic ratios for each square and then multiply to get the combined probabilities. For example, the probability of having both diseases requires multiplying the probability of *each* event.

a. Is the inheritance of an “A” or “a” allele dependent on (or affected by) the inheritance of a “B” or “b” allele? Why or why not?

____________________________________________________________________________________

*(hint: Which of Mendel’s Laws is involved?)*

b. What is the chance that their child will be phenotypically normal (for both genes)?  
Show your work: ________________________________________________________________

c. What is the chance that their child will be genotype aabb (affected with both diseases)?  
Show your work: ________________________________________________________________

d. What is the chance that they will have a boy who has genotype AaBb (carrier for both diseases like his parents)? Show your work:

____________________________________________________________________________________
Transcribed Image Text:# Genetics Problem Set 7. Instead of one big square, it is much easier to make two small Punnett squares, one for each gene. **In the space at the bottom of the page, draw the two squares** (from 4d and 5b on the previous page). Indicate the phenotypic ratios for each square and then multiply to get the combined probabilities. For example, the probability of having both diseases requires multiplying the probability of *each* event. a. Is the inheritance of an “A” or “a” allele dependent on (or affected by) the inheritance of a “B” or “b” allele? Why or why not? ____________________________________________________________________________________ *(hint: Which of Mendel’s Laws is involved?)* b. What is the chance that their child will be phenotypically normal (for both genes)? Show your work: ________________________________________________________________ c. What is the chance that their child will be genotype aabb (affected with both diseases)? Show your work: ________________________________________________________________ d. What is the chance that they will have a boy who has genotype AaBb (carrier for both diseases like his parents)? Show your work: ____________________________________________________________________________________
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