Biology Deck 4

Question 1

allopatric speciation

Answer 1

population changes over time after being isolated from others

Question 2

reasons for allopatric speciation

Answer 2

geological changes, human developments, geological event, colonization, climate change

Question 3

evolution

Answer 3

genetic change in a population over time

Question 4

natural selection

Answer 4

process by which advantageous inherited traits survive to reproduce at higher rates than do individuals with other traits

Question 5

biological species concept (BSC)

Answer 5

defines a species as members of a natural interbreeding population, that cannot interbreed with other groups

Question 6

2 types of reproductive isolating mechanisms

Answer 6

prezygotic and postsygotic

Question 7

prezygotic

Answer 7

before fertilization, prevent the formation of viable zygotes

Question 8

gametic isolation

Answer 8

prezygotic isolation, sperm and egg not being compatible, sperm not attracted or penetrated

Question 9

temporal isolation

Answer 9

prezygotic isolation, breeding at different times

Question 10

behavioral isolation

Answer 10

different rituals (in life, mating, etc.)

Question 11

mechanical

Answer 11

lack of fit for sexual organs

Question 12

habitat isolation

Answer 12

isolated due to different environment

Question 13

postzygotic

Answer 13

after fertilization, hybridization occurs between some species

Question 14

gradualism

Answer 14

slow and steady change

Question 15

punctuated equilibrium

Answer 15

sudden change

Question 16

adaptive radiation

Answer 16

rise of new species over a relatively short period of time