Isolation

Question 1

Species

Answer 1

Group of organism that can breed in nature and produce fertile offspring

Question 2

Reproductive barriers

Answer 2

Keep species separate so they can’t mate

Question 3

Zygote

Answer 3

A fertilized egg

Question 4

Prezygotic barrier

Answer 4

Prevents mating or fertilization

Question 5

Postzygotic barrier

Answer 5

Prevents growing, fertile offspring

Question 6

habitat isolation

Answer 6

Prezygotic barrier: populations live in different habitats so don’t meet

Question 7

Behavioral isolation

Answer 7

Prezygotic barrier: mating or courtship behavior is different, different sexual attractions

Question 8

Temporal isolation

Answer 8

Prezygotic barrier: breeding seasons or time of day different

Question 9

Mechanical isolation

Answer 9

Prezygotic barrier: different body parts preventing mating

Question 10

Gametic isolation

Answer 10

Prezygotic barrier: gametes don’t join, sperm is not attracted

Question 11

Hybrid

Answer 11

Offspring from 2 different species

Question 12

Hybrid zone

Answer 12

Geographic area where interbreeding occurs and hybrids are created

Question 13

Reduced hybrid viability

Answer 13

Postzygotic barrier: zygote fails to mature

Question 14

Reduced Hybrid fertility

Answer 14

Postzygotic barrier: hybrids survive but can’t reproduce ex:mule

Question 15

Hybrid breakdown

Answer 15

Postzygotic barrier: offsprings are fertile but don’t grow as well as pure breeds

Question 16

Microevolutiom

Answer 16

Small changes within a population ex: color change

Question 17

Macroevolution

Answer 17

Big changes ex: new species or species wiped out

Question 18

Speciation

Answer 18

Formation of a new species. Occurs when 2 populations no longer mate with each other

Question 19

Allopathic speciation

Answer 19

Geographic separation leads to 2 physically separate gene pools

Question 20

Sympatric speciation

Answer 20

No geographic separation, but have different preferences in where they hang out or who they want to mate with

Question 21

Gradualism

Answer 21

Speciation that occurs slowly tiny change after tiny change

Question 22

Punctuated equilibrium

Answer 22

Long periods with no real changes and then a sudden big change

Question 23

Adaptive radiation

Answer 23

One species quickly
Evolved into many species due to abundant recources

Question 24

Antibiotic resistance

Answer 24

Some bacteria naturally have mutations to survive an antibiotic. All non resistant bacteria die
Only resistant bacteria survive and reproduce