Species

Question 1

How can we tell if organism are different species?

Answer 1

Can’t produce offspring

Question 2

Undergo natural selection and evolve differently to the point they are different species and cat reproduce means

Answer 2

Reproductively isolated

Question 3

Divergent evolution means

Answer 3

Same species grow apart in a likeness due to different pressures

Question 4

Convergent evolution means

Answer 4

Different species become more alike due to pressure being same

Question 5

Pre-zygotic barriers

Answer 5

Prevent fertilization

Question 6

Ex of Pre-zygotic barriers are (4)

Answer 6

1) Temporal
2) Ecological
3) Behavioral
4) Mechanical

Question 7

Temporal

Answer 7

When two species mate diff times

Question 8

Ecological

Answer 8

Two diff habitats

Question 9

Behavioral

Answer 9

Different courtship

Question 10

Mechanical

Answer 10

Physical differences
(Small dog with Big dog ex)

Question 11

Barriers that affect after an embryo is developed

Answer 11

Post-zygotic barriers

Question 12

Examples of Post-Zygotic barriers (3)?

Answer 12

1) Hybrid inviability
2) Hybrid Infertility
3) Hybrid breakdown

Question 13

Hybrid invisibility means

Answer 13

Offspring is produced but fails to develop

Question 14

Hybrid infertility

Answer 14

Hybrid fails to produce gametes

Question 15

Hybrid breakdown

Answer 15

F1 can make offspring but F2 generation can’t develop properly

Question 16

Little evolution is called

Answer 16

Punctuated equilibrium

Question 17

Gradualism means

Answer 17

Slow evolution away from each other

Question 18

Species rapidly diversifies
(ecological niches)

Answer 18

Adaptive radiation

Question 19

Two types of speciation?

Answer 19

1) Allopatric
2) Sympatric

Question 20

Separated by geographical barrier

Answer 20

Allopatric speciation

Question 21

When new species form randomly within population

Answer 21

Sympatric speciation

Question 22

Extra chromosomes

Answer 22

Polyploidy