Biology 10

Question 1

Species

Answer 1

Can bread and produce viable offspring

Question 2

Natural selection

Answer 2

Artificial selection
Heritability
Struggle for survival

Question 3

Principles of natural selection

Answer 3

Variation
Overproduction
Adaptation
Descent w/ modification

Question 4

Evidence of evolution

Answer 4

Fossils
Geography
Embryology
Anatomy

Question 5

Anatomy

Answer 5

Homologous structure
Analogous structure
Vestigial structure

Question 6

Homologous

Answer 6

same structure but different functions

Question 7

Analogous structure

Answer 7

different structures but similar functions

Question 8

Vestigial Structures

Answer 8

Under-developed/ unused structure

Question 9

Genetic variation

Answer 9

increases the chance that some individuals will survive. Stored in the populations gene pool

Question 10

Gene pool

Answer 10

all combined alleles of all individuals

Question 11

Sources of genetic variation

Answer 11

Mutations and recombination

Question 12

recombination

Answer 12

Get new allele combination in offspring. Occurs during meiosis

Question 13

3 ways natural selection can change distribution trait

Answer 13

Directional, stabalizing, disruptive

Question 14

Mechanisms of evolution

Answer 14

Gene flow
Gene Drift
Sexual selection

Question 15

Gene flow

Answer 15

Movement of alleles from one population to another.
Increases GV
Decrease gene flow makes pop. very different

Question 16

Genetic Drift

Answer 16

Change in allele frequency due to chance.
Decrease in Genetic diversity
Pop. must be small enoughf or it to occur
Bottle neck or Founder

Question 17

Bottleneck Effect

Answer 17

an event that decreases a pop. size in an area

Question 18

Founder Effect

Answer 18

Small # of individuals colonize an area.
Gene pool not representative of the entire pop.

Question 19

Effects of Genetic drift

Answer 19

Population loses genetic variation.
Less likely to adapt to changing environment.
lethal alleles will affect more of pop.