Show:
I love
wild
and
fancy
guppies
100
1831-1836
When was the voyage of the Beagle? Follow up - what were some of Darwin's observations in South America that led to his idea of descent with modification, aka natural selection?
100
The mechanism of evolution that involves a sudden and drastic shrinkage in population.
What is genetic drift?
100
Competition. Variation. Fitness.
What are the three pre-existing conditions for Natural Selection? Follow up: Can you explain what each means?
100
The couple that conducted research on the microevolution of medium ground finch beak size on Daphne Major in the Galapagos.
Who are Peter and Rosemary Finch?
100
When the creation of new species results from the geographic separation of two sub-populations.
What is allopatric speciation? Follow up - what is the other kind of speciation we discussed and how does it work?
200
The first person to offer a plausible explanation for how species have changed over time.
Who was Charles Darwin?
200
A piece of a genome that codes for a particular protein (which eventually, and perhaps in combination with other proteins, codes for a particular trait.)
What is a gene?
200
The process by which adaptations are passed on to future generations more frequently than other traits.
What is Natural Selection?
200
The man who conducted research on guppy spot brightness in Venzuela and Trinidad.
Who is John Endler?
200
When natural selection pushes the most frequent trait to two extremes.
What is disruptive selection? Follow up - when is it most likely to occur?
300
Fossils and a new hypothesis of tectonic plates in geology.
What were some lines of evidence that made some people begin to doubt the idea of fixed species?
300
The entire set of an organism's DNA.
What is a genome?
300
The only mechanism of evolution that involves adaptations.
What is Natural Selection?
300
The person who incorrectly proposed that evolution happened when individuals changed their traits to better survive and reproduce in their lifetime and then passed the trait on to the next generation.
Who is LaMark? Follow up: why is this a misconception?
300
When natural selection results in a trait of a population shifting to an extreme.
What is directional selection? Follow up - can you explain an example of it.
400
The existence of biodiversity can be explained by the notion of fixed (static) species created by God.
What was the prevailing explanation in the 19th century for the existence of biodiversity?
400
The kind of macromolecule that carries all of an organism's genetic information.
What is DNA?
400
When genes enter into or out of a gene pool because organisms are entering into or out of the environment.
What is gene flow?
400
The condition of having many adaptations for a habitat.
What is fitness?
400
When a change in frequency of traits occurs within a species.
What is microevoltuion?
500
A trait that enhances survival and reproduction in a particular habitat.
What is an adaptation?
500
Change in a population's gene pool over time, which leads to a change in the population's frequency of traits.
What is evolution?
500
A change in DNA that occurs when a genome replicates.
What is a mutation? Follow up: in what kind of cell must a mutation occur in order to cause evolution?
500
When attracting a mate requires a loud splash of sound or color.
When does natural/survival selection favor the opposite trait than what sexual selection would favor?
500
When so much genetic divergence occurs that a whole new species results.
What is macroevolution?