Evolutionary processes

Question 1

How does Inbreeding affect allele frequency and genotype frequency?

Answer 1

increases homozygosity and decreases heterozygosity frequency

Question 2

What are two fundamental points of inbreeding?

Answer 2

causes homozygosity and does not cause evolution but increases the rate

Question 3

How does natural selection violate hardy-Weinberg’s principle?

Answer 3

certain alleles associated with the favored phenotypes increase in frequency while other alleles decrease in frequency

Question 4

What happens when genetic variation is low and the environment changes?

Answer 4

the available alleles will not allow the individuals to survive and reproduce and the population could face extinction

Question 5

What are the four modes of natural selection?

Answer 5

Directional, stabilizing, balancing, and disruptive

Question 6

Hardy-Weinberg Principles?

Answer 6

Random mating, no natural selection, no genetic drift, no gene flow, and no mutation

Question 7

Fundamental Ideas?

Answer 7

natural selection is not the only process responsible for evolution
Each of the four evolutionary processes has different consequences for genetic variation and fitness

Question 8

How does selection affect genetic variation?

Answer 8

average fitness of the population will decrease if the environment change is severe

Question 8

What can the four factors of evolution cause together or alone?

Answer 8

allele frequencies in a population to change over time

Question 9

What are the fundamental ideas of asymmetry sex?

Answer 9

1. females invest a in a lot in few eggs
2. Equal # of males and females, males will try to mate with any female
3. Male fitness is limited by access to mate