bio chap 16

Question 1

If the phenotype of pea pod color is determined by incomplete dominance then you would expect the F2 generation from an original cross of true-breeding blue stock with true-breeding yellow stock to be:

Answer 1

25% yellow, 50% green, 25% blue.

Question 2

A true breeding black rabbit is crossed with a true breeding white rabbit to produce an F1 generation with 8 individuals. If blending inheritance were true, which of the following would represent the expected phenotype of the F1 generation?

Answer 2

0 black rabbits, 0 white rabbits, 8 grey rabbits

Question 3

In Mendel’s experiments, his parental pea plants would be referred to as the F1 generation, and their progeny would be referred to as the P1 generation.

Answer 3

false

Question 4

You have an F2 generation derived from two true- breeding parents with different characteristics for the same trait (determined by a single allele). What percentage of the F2 generation with a dominant phenotype would you expect to be homozygous for your single allele of interest?

Answer 4

33%

Question 5

Which of the following statements is true regarding Mendel’s work?

Answer 5

He focused on a subset of easily discernible traits in pea plants.

Question 6

Mendel’s famous experiments were done using which plant?

Answer 6

pea plants

Question 7

Imagine that you are standing next to Aristotle in early Greece. You both see an older, balding man with visible age spots on his skin. This man also appears to be a wounded soldier, whose left leg has been amputated. What might Aristotle say to you?

Answer 7

“Because that man is balding and has age spots, his children will likely go bald and will develop age spots.”

Question 8

Which of the following statements is true regarding the yellow-seed pea plants of Mendel’s work?

Answer 8

Yellow-seed plants have an enzyme that breaks down chlorophyll.

Question 9

Why was the theory of blending inheritance eventually disproven?

Answer 9

“blending inheritance is incompatible…with obvious fact. If it were really true that variation disappeared, every generation should be more uniform than the previous one. By now, all individuals should be as indistinguishable as clones.”

Question 10

Which of the following genotypes would result in a true-breeding stock?

Answer 10

AA or aa, but not Aa