This occurs when 2 populations can no longer interbreed
Reproductive isolation
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25
This selection pressure favors the extreme phenotypes, dividing the population into 2 distinct groups
Disruptive Selection
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15
True/False: Genetic drift is change in the allele frequency of a population due to a random, chance event.
TRUE
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15
When members of a population become a new species due to having different courtship rituals (singing, dancing, etc...) , this is called __________ isolation.
Behavioral
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15
In natural selection, the selective agent is
the environment
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15
A group of organisms that can mate with each other and produce fertile offspring are called a
Species
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15
In this type of natural selection, individuals with intermediate traits (the average/middle) are more likely to survive and reproduce
Stabilizing
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15
All of the genetic information (all of the alleles) found in a population.
Gene pool
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20
Give an example of one source of genetic variation for a population
Mutations (will also accept sexual reproduction)
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lifesaver
Give 20 points!
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star
Double points!
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rocket
Go to first place!
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banana
Go to last place!
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seesaw
Swap points!
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fairy
Take points!
5
10
15
20
25
fairy
Take points!
5
10
15
20
25
banana
Go to last place!
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15
This is a mechanism of evolution in which allele frequencies of a population change over generations due to chance, NOT fitness
Genetic Drift
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15
Temporal isolation occurs when two different parts of the population reproduce at different _______________ .
