Marine Biology 250 (Exam 1, 2, and Review)
Study online at https://quizlet.com/_f5r3j7
1. What requirements must be met in order for natural B
selection to occur? Think of traits.
a. Variable and responsive to environmental changes
b. Beneficial and heritable
c. Heritable and adaptive
d. Adaptive and allow for acclimatization
2. What is the ultimate source of genetic variation in a B
population?
a. Natural selection
b. Mutation
c. Migration
d. Drift
e. Reproduction
3. Which of the following scenarios is an example of A
genetic drift?
a. Locals in a tropical island heavily harvested a pop-
ulation of marine snails for food
consumption. A very small number of snails was left
to survive and reproduce.
b. Most bony fishes are broadcast spawners. Females
release large amounts of eggs that,
once fertilized by male sperm, will drift in the ocean
until they hatch and become fish
larvae.
c. Two species of marine reptiles intermix and interact
, Marine Biology 250 (Exam 1, 2, and Review)
Study online at https://quizlet.com/_f5r3j7
in the same feeding grounds.
d. Different populations of same sablefish species
intermix and exchange genetic material
through reproduction.
4. Removal of genes/traits at random (e.g. a selection E
event)
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
5. This is not an evolutionary force A
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
6. Random changes to DNA sequences that are herita- C
ble by offspring
a. Reproduction
b. Natural Selection
c. Mutation
, Marine Biology 250 (Exam 1, 2, and Review)
Study online at https://quizlet.com/_f5r3j7
d. Migration
e. Genetic Drift
7. Most favorable traits "survive" and are passed to B
offspring
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
8. Traits/genes move between populations of a species D
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
9. In ecology, a trophic level is the position that an A
organism occupies in a food chain -- what it
eats, and what eats it. It is generally agreed that the
energy transferred from one trophic level to
the next one is ______ average.
a. 10%
b. 20%
, Marine Biology 250 (Exam 1, 2, and Review)
Study online at https://quizlet.com/_f5r3j7
c. 40%
d. 80%
10. A scientist hypothesizes that the temperature at A
which an alligator's egg is incubated will
determine whether the alligator will be male or fe-
male. What is the independent variable?
a. The temperature
b. Then incubator
c. The gender of the alligator
d. The male alligator
11. What is a key component to an experimental type of D
study?
a. Collecting data from nature
b. Knowing everything about all factors other than the
treatment
c. Not manipulating the variable of interest
d. Including a control to compare the effects of a
treatment
12. You are a voracious fish. Where would you have a A
better chance of finding preys?
a. Upwelling areas, where deep-cold water, often
acidic and rich in nutrients, is
brought up to the surface, supporting primary pro-
ducers.
Study online at https://quizlet.com/_f5r3j7
1. What requirements must be met in order for natural B
selection to occur? Think of traits.
a. Variable and responsive to environmental changes
b. Beneficial and heritable
c. Heritable and adaptive
d. Adaptive and allow for acclimatization
2. What is the ultimate source of genetic variation in a B
population?
a. Natural selection
b. Mutation
c. Migration
d. Drift
e. Reproduction
3. Which of the following scenarios is an example of A
genetic drift?
a. Locals in a tropical island heavily harvested a pop-
ulation of marine snails for food
consumption. A very small number of snails was left
to survive and reproduce.
b. Most bony fishes are broadcast spawners. Females
release large amounts of eggs that,
once fertilized by male sperm, will drift in the ocean
until they hatch and become fish
larvae.
c. Two species of marine reptiles intermix and interact
, Marine Biology 250 (Exam 1, 2, and Review)
Study online at https://quizlet.com/_f5r3j7
in the same feeding grounds.
d. Different populations of same sablefish species
intermix and exchange genetic material
through reproduction.
4. Removal of genes/traits at random (e.g. a selection E
event)
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
5. This is not an evolutionary force A
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
6. Random changes to DNA sequences that are herita- C
ble by offspring
a. Reproduction
b. Natural Selection
c. Mutation
, Marine Biology 250 (Exam 1, 2, and Review)
Study online at https://quizlet.com/_f5r3j7
d. Migration
e. Genetic Drift
7. Most favorable traits "survive" and are passed to B
offspring
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
8. Traits/genes move between populations of a species D
a. Reproduction
b. Natural Selection
c. Mutation
d. Migration
e. Genetic Drift
9. In ecology, a trophic level is the position that an A
organism occupies in a food chain -- what it
eats, and what eats it. It is generally agreed that the
energy transferred from one trophic level to
the next one is ______ average.
a. 10%
b. 20%
, Marine Biology 250 (Exam 1, 2, and Review)
Study online at https://quizlet.com/_f5r3j7
c. 40%
d. 80%
10. A scientist hypothesizes that the temperature at A
which an alligator's egg is incubated will
determine whether the alligator will be male or fe-
male. What is the independent variable?
a. The temperature
b. Then incubator
c. The gender of the alligator
d. The male alligator
11. What is a key component to an experimental type of D
study?
a. Collecting data from nature
b. Knowing everything about all factors other than the
treatment
c. Not manipulating the variable of interest
d. Including a control to compare the effects of a
treatment
12. You are a voracious fish. Where would you have a A
better chance of finding preys?
a. Upwelling areas, where deep-cold water, often
acidic and rich in nutrients, is
brought up to the surface, supporting primary pro-
ducers.
