Vocabulary
Natural Selection
Pre-&-post barriers
Hardy hardy har har Mr. Weinberg
100
The process by which species cease to exist.
What is extinction?
100
The process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals.
What is Natural Selection?
100
Prezygotic barrier in which species live in different areas or they occupy different habitats within the same area.
What is Habitat Isolation?
100
A model used to assess whether natural selection or other factors are causing evolution at a particular locus
What is Hardy-Weinberg Equilibrium?
200
Descent with modification.
What is Evolution?
200
A trait that helps an organism survive and reproduce in its environment.
What is Adaptation?
200
This barrier occurs when unique behavioral patterns and rituals separate species.
What is Behavioral Isolation?
200
Other than p+q=1, this is the other Hardy-Weinberg Equilibrium formula.
What is p2 + 2pq + q2 = 1?
300
Humans select traits that are desirable to be passed on to offspring.
What is Artificial Selection?
300
Between artic wolves & red wolves, this one would typically survive better in a taiga biome.
What is artic wolf?
300
The western spotted skunk mates in late summer, while the eastern spotted skunk mates in late winter, serving as a prezygotic barrier. This is the type of barrier this example represents.
What is Temporal Isolation?
300
This is any one of the five conditions that must be met for the Hardy-Weinberg Equilibrium.
What is:
No mutations
Random mating
No natural selection
Extremely large population size
No gene flow
400
When populations become so adapted to an ecological niche that the develop specialized or distinctive traits that eventually differentiate it entirely from its biological cousins.
What is Speciation?
400
This is most likely to happen in the moth populations below regarding being hunted.
Dark moths - hunted easily - population decreases
400
Barrier in which proteins on the surface of gametes do not allow for the egg and sperm to fuse.
What is Gametic Isolation?
400
You are told that 20% of a population is homozygous recessive. What variable is that referring to in the Hardy Weinberg equations?
What is q2?
500
Speciation in which physical barrier divides population or a small population is separated from main population.
What is Allopatric Speciation?
500
The trees these moths used to live on were white, but have been covered in soot from coal factories. This moth will be more successful in this environment.
What is dark moths?
500
A mule is an example of this barrier, which occurs when a hybrid can develop into a healthy adult, but it is sterile.
What is Reduced Hybrid Fertility?
500
You have sampled a population and found that 36% are homozygous recessive (aa). This is the frequency of the A and a alleles?
What is 40% A allele (dominant) and 60% a allele (recessive)?