Evolution

Question 1

Evolution

Answer 1

change in allele frequencies within a population

Question 2

Gene

Answer 2

section of DNA instructing hwo to produce a trait

Question 3

Allele

Answer 3

one variant of a gene

Question 4

Mechanism of evolution

Answer 4

1. mutation
2. migration
3. genetic drift
4. natural selection

Question 5

Mutation

Answer 5

direct alteration of dna so that one allele is changed to another
ex. radiation

Question 6

Migration / Gene flow

Answer 6

individuals leave or move into an existing population, thus changing the overall allele frequencies

Question 7

Genetic drift

Answer 7

random change in allele frequencies

Question 8

Natural Selection

Answer 8

non-random elimination of alleles
process in which evolution occurs

Question 9

Natural Selection requirements

Answer 9

1. variation
2. heritable
3. differential reproductive success

Question 10

Type of selection

Answer 10

Directional selection : moving the distribution to a side
Stabilizing selection : decrease variability of graph (taking the ends out)
Disruptive selection : more frequent extremes (middle taken out)