BIO 122 Lecture 14: Ch 14 In Class Notes
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QUESTION 1
If Plant 1 has a genotype of YY and Plant 2 has a genotype of yy, what is Plant 1's phenotype (the physical appearance of the plants' seeds)?
0.5 points
QUESTION 2
If Plant 1 has a genotype of YY and Plant 2 has a genotype of yy, what is Plant 2's phenotype (the physical appearance of the plants' seeds)?
0.5 points
QUESTION 3
What are the possible genotypes for offspring between Plant 1 and Plant 2?
1 points
QUESTION 4
What are the possible phenotypes for offspring between Plant 1 and Plant 2?
1 points
QUESTION 5
Now, trade one allele between plants such that each is heterozygous for the color trait. Fill in the Punnett Square below, with one plant's allele's in the dark boxes along the top, and the other plant's alleles in the dark boxes along the left.
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QUESTION 6
What are the possible genotypes for offspring between Plant 1 and Plant 2?
, ,
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QUESTION 7
What percentage of offspring would you expect to have each genotype?
YY %
Yy %
yy %
1 points
QUESTION 8
What are the possible phenotypes for offspring between these two plants?
,
1 points
QUESTION 9
What percentage of offspring would you expect to have each phenotype?
Yellow %
Green %
1 points
QUESTION 10
Mendel developed his Law of Segregation after observing two generations of crossed pea plants. His first generation plants were homozygous(as were yours). The second generation of crossing happened between two heterozygous plants (as in Question 5).
Imagine that the prevailing hypothesis of the time is that traits from the mother and father tend to blend together in offspring. Why did the results of Mendelâs experiment prompt him to come up with the Law of Segregation instead?