Darwin's Research
Natural Selection
Mechanisms of Evolution
Miscellaneous
Also Miscellaneous
100
During this expedition, Darwin noticed that plants and animals in South America were similar but not identical to plants and animals back in Europe.
What is the Beagle expedition?
100
This type of selection occurs when the intermediate phenotype of a trait becomes favored within a group of organisms.
What is stabilizing selection?
100
The movement of alleles from one population to another.
What is gene flow?
100
This model states that the allele frequencies in a population stay the same as long as certain conditions are met.
What is the Hardy-Weinberg equilibrium?
100
Remnants of organs or structures that had a function in an early ancestor but no longer have a discernible purpose.
What are vestigial structures?
200
Darwin studied this kind of animal in the Galápagos islands, giving him the base for his theory of evolution.
What are finches?
200
The observable change in the allele frequencies of a population over time.
What is microevolution?
200
This type of selection occurs when certain traits increase mating success?
What is sexual selection?
200
This type of reproductive isolation is caused by disruptive differences in mating behavior and rituals.
What is behavior isolation?
200
After The Battle of Blood, half of the mermaids in a population begin to inhabit warmer waters closer to shore, where there aren't many fish but lots of edible plants. The other mermaids remain deep on the cold ocean floor, and hunt large sea creatures and anemones. What will probably happen to the two groups over time?
What is speciation?
300
The study of the distribution of organisms around the world.
What is biogeography?
300
This type of selection occurs when both the extreme ends of a phenotype are favored and individuals with the median of the trait are selected against by something in nature.
What is disruptive selection?
300
Changes in allele frequencies of a population.
What is genetic drift?
300
This occurs when members of different populations of the same species cannot mate with each other for one reason or another.
What is reproductive isolation?
300
In a population of dragons, some court potential mates by bringing them dead cattle and other farm animals. The other dragons in the population bring their potential mates stolen gold and treasure. What type of reproductive isolation is this?
What is behavioral isolation?
400
Features that are similar in structure but appear different in different organisms and have different functions.
What are homologous structures?
400
This type of distribution of a trait is when the frequency is highest near the mean value and decreases toward each extreme end of the range.
What is normal distribution?
400
This effect occurs after an event greatly decreases the size of a population.
What is the bottleneck effect?
400
Two populations of a particular unicorn species are separated by an evil spell and can no longer mate with each other because now there's an evil enchanted swamp between the two groups. What type of reproductive isolation is this an example of?
What is geographical isolation?
400
Half of an ewok tribe begins to exhibit courtship behavior in the spring. The other half exhibits courtship behavior in the fall. What type of reproductive isolation is this an example of?
What is temporal isolation?
500
These structures perform similar functions, but may look different.
What are analogous structures?
500
The type of selection that favors phenotypes at one extreme of a trait's range.
What is directional selection?
500
This genetic drift occurs after a small number of individuals colonize a new area.
What is the founder effect?
500
Reproductive isolation can result in the creation of two separate species. This is called _________.
What is speciation?
500
This type of reproductive isolation is caused by members of a population exhibiting mating behavior at different types of year.
What is temporal isolation?
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