Name:________________
Period:____
Amoeba Sisters – Genetic Drift
https://www.youtube.com/watch?v=W0TM4LQmoZY
Watch the video using the link above and answer the questions below. Answers are in the video, in
order but you can use Google to help you if you aren’t sure. You can mark correct answers by making
them BOLD.
Questions:
1. When your ride your scooter across the sidewalk, you kill some of the insects in the way when
you roll over them. The insects that survived was due to:
a) Random Chance
b) Being Fastest
c) Being Fittest
d) Super Strength
2. Changes in allele frequency due to chance is called:
a) Artificial Selection
b) Genetic Drift
c) Natural Selection
d) Fitness
3. A natural disaster wipes out most of a population. The allele frequencies of the surviving
population may not be the same as the allele frequencies of the original population. This form
of genetic drift is called:
a) the founder effect
b) artificial selection
c) bottleneck effect
d) natural selection
4. A few random individuals colonize an area in which no individuals of their species lives. The
allele frequencies of the founding population may not represent the allele frequencies of the
mainland population. This form of genetic drift is called:
a) the founder effect
b) artificial selection
c) bottleneck effect
d) natural selection
5. Genetic drift would have the MOST impact on which of the following populations?
a) small
b) large
Amoeba Sisters – Speciation
https://www.youtube.com/watch?v=udZUaNKXbJA
Watch the video using the link above and answer the questions below. Answers are in the video, in
order but you can use Google to help you if you aren’t sure. You can mark correct answers by making
them BOLD.
Questions:
1. Which of the following IS NOT a feature of two organisms that are the SAME SPECIES
a) They can reproduce (breed)
b) They are the same color
c) Their offspring can reproduce
2. A hybrid is a cross between two…
a) Different animals
b) Different species
c) Same species
3. What causes speciation to occur?
e) when populations are reproductively isolated
f) when populations are reproductively together
g) when individuals are reproductively isolated
4. Evolution / Natural selection occurs in
e) An individual
f) A population (group)
5. Change over time is only due to isolation.
c) True
d) False