nave genotype arate the genotypes of the possible gametes that each parent can make. Remember, you should have only ONE allele from EACH chromosome in each gamete (haploid). Write the probabilities for each gamete b. To make a Punnett square, you write the possible gametes for each parent on each side of your "square"-in the grey boxes below. АВ |AA BB a b АВ a b аa b c. Now demonstrate random fertilization by combining gametes from each parent to create possible offspring in the white squares. Note: not all of these offspring are actually made in any given human fertilization-only ONE is made! Each of the white squares below represents one potential offspring; the set of white squares together represents all the possible offspring that these two individuals could have with respect to these two traits. d. What is the probability of each white box in the Punnett Square above? e. There are 4 different phenotypes in the Punnett Square. (Capital letters in genotypes are dominant so AA and Aa both show a big A phenotype.) Using 4 different colors, or shapes, group together the 4 phenotypes on the figure in 3b. What is the probability of each? AB Ab a B ab

Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter14: Chromosomes And Human Inheritance
Section: Chapter Questions
Problem 3GP: Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With...
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Please complete question 3 and 4 

3. a. Chris and Emma both have genotype AaBb. Genes A and B are on separate chromosomes. List
the genotypes of the possible gametes that each parent can make. Remember, you should have only
ONĚ allele from EACH chromosome in each gamete (haploid). Write the probabilities for each gamete
b. To make a Punnett square, you write the possible gametes for each parent on each side of your
"square"-in the grey boxes below.
АВ
a b
АВ
AA BB
a b
аa bb
c. Now demonstrate random fertilization by combining gametes from each parent to create possible
offspring in the white squares.
Note: not all of these offspring are actually made in any given human fertilization-only ONE is made!
Each of the white squares below represents one potential offspring; the set of white squares together
represents all the possible offspring that these two individuals could have with respect to these two traits.
d. What is the probability of each white box in the Punnett Square above?
e. There are 4 different phenotypes in the Punnett Square. (Capital letters in genotypes are dominant so
AA and Aa both show a big A phenotype.) Using 4 different colors, or shapes, group together the 4
phenotypes on the figure in 3b. What is the probability of each?
AB
Ab
ab
4. 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 1d and 2b on previous page). Indicate the
phenotypic ratios for each square and then multiply to get the combined probabilities (like 3e). For
example, the probability of having both diseases requires multiplying the probability of gach 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)?
c. What is the chance that their child will be genotype aabb (affected with both diseases)?
d. What is the chance that they will have a boy who has genotype AaBb (carrier for both diseases)?
Transcribed Image Text:3. a. Chris and Emma both have genotype AaBb. Genes A and B are on separate chromosomes. List the genotypes of the possible gametes that each parent can make. Remember, you should have only ONĚ allele from EACH chromosome in each gamete (haploid). Write the probabilities for each gamete b. To make a Punnett square, you write the possible gametes for each parent on each side of your "square"-in the grey boxes below. АВ a b АВ AA BB a b аa bb c. Now demonstrate random fertilization by combining gametes from each parent to create possible offspring in the white squares. Note: not all of these offspring are actually made in any given human fertilization-only ONE is made! Each of the white squares below represents one potential offspring; the set of white squares together represents all the possible offspring that these two individuals could have with respect to these two traits. d. What is the probability of each white box in the Punnett Square above? e. There are 4 different phenotypes in the Punnett Square. (Capital letters in genotypes are dominant so AA and Aa both show a big A phenotype.) Using 4 different colors, or shapes, group together the 4 phenotypes on the figure in 3b. What is the probability of each? AB Ab ab 4. 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 1d and 2b on previous page). Indicate the phenotypic ratios for each square and then multiply to get the combined probabilities (like 3e). For example, the probability of having both diseases requires multiplying the probability of gach 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)? c. What is the chance that their child will be genotype aabb (affected with both diseases)? d. What is the chance that they will have a boy who has genotype AaBb (carrier for both diseases)?
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