BIO 200 Lecture EXAM 1
You are studying sea turtle shell color variation in one species of sea turtle. Which of
the following statements does NOT explain how the one of the three conditions for
natural selection is met for sea turtle shell color?
A. Shell color is a heritable trait.
B. Neither brown nor yellow shelled turtles can retract their heads into their shells.
C. Sharks, the main predator of sea turtles, can more easilt see brown sea turtles than
yellow-green sea turtles
D. The finelt serrated jaws of the yellow-green sea turtles allow them to access sea
grasses and algae more easily than brown sea turtles
E. Both yellow-green and brown sea turtles live in the same area of the Atlantic Ocean -
answerB
You are working in Dr. Poulin's biology lab at the University at Buffaluckville where you
are replicating Mendel's monohybrid crosses. Using a new strain of pea plants with blue
(B) and orange (b) flowers, you find:
A. All the pea plant flowers in the F1 generation were orange
B. A ratio of 3 blue to 1 orange flowered peas in the F2 generation
C. A ratio of 3 orange to 1 blue flowered peas in the F2 generation
D. A 9:3:3:1 ratio of blue and orange pea flower colors in the F2 generation
E. A 1:2:1 ratio between blue and orange flowered peas in the F2 generation - answerB
All of the following statements are true regarding meiosis EXCEPT:
A. The gametes produced are diploid
B. Homologous pairs join together and engagae in "crossing over".
C. The end product is four gametes
D. Meiosis only occurs in reproductive structures
E. It involves two rounds of division - answerA
A pair of swallows (song birds) is blown off course by a storm and end up on an island
where there are no other swallows. As luck would have it, the pair is a male and a
female and there is a lot of food on the island. This is an example of: - answerFounder
effect
A local pond is a favorite habitat for Canadian geese. Coyotes prey on geese and
typically hunt either old or fat geese. After several years, the average of age and weight
of the geese have reduced. These changes are due to:
A. Stabilizing selection
B. Negative frequency dependent selection
C. Directional selection.
D. Disruptive selection
E. Heterozygote advantage - answerC
You are studying sea turtle shell color variation in one species of sea turtle. Which of
the following statements does NOT explain how the one of the three conditions for
natural selection is met for sea turtle shell color?
A. Shell color is a heritable trait.
B. Neither brown nor yellow shelled turtles can retract their heads into their shells.
C. Sharks, the main predator of sea turtles, can more easilt see brown sea turtles than
yellow-green sea turtles
D. The finelt serrated jaws of the yellow-green sea turtles allow them to access sea
grasses and algae more easily than brown sea turtles
E. Both yellow-green and brown sea turtles live in the same area of the Atlantic Ocean -
answerB
You are working in Dr. Poulin's biology lab at the University at Buffaluckville where you
are replicating Mendel's monohybrid crosses. Using a new strain of pea plants with blue
(B) and orange (b) flowers, you find:
A. All the pea plant flowers in the F1 generation were orange
B. A ratio of 3 blue to 1 orange flowered peas in the F2 generation
C. A ratio of 3 orange to 1 blue flowered peas in the F2 generation
D. A 9:3:3:1 ratio of blue and orange pea flower colors in the F2 generation
E. A 1:2:1 ratio between blue and orange flowered peas in the F2 generation - answerB
All of the following statements are true regarding meiosis EXCEPT:
A. The gametes produced are diploid
B. Homologous pairs join together and engagae in "crossing over".
C. The end product is four gametes
D. Meiosis only occurs in reproductive structures
E. It involves two rounds of division - answerA
A pair of swallows (song birds) is blown off course by a storm and end up on an island
where there are no other swallows. As luck would have it, the pair is a male and a
female and there is a lot of food on the island. This is an example of: - answerFounder
effect
A local pond is a favorite habitat for Canadian geese. Coyotes prey on geese and
typically hunt either old or fat geese. After several years, the average of age and weight
of the geese have reduced. These changes are due to:
A. Stabilizing selection
B. Negative frequency dependent selection
C. Directional selection.
D. Disruptive selection
E. Heterozygote advantage - answerC
