Unit 1 Evolution

Question 1

Allopatric speciation

Answer 1

Speciation in which gene flow is prevented by a geographical barrier

Question 2

Behavioural barrier

Answer 2

Barrier to gene flow caused by behavioural differences between individuals

Question 3

Biological species

Answer 3

Group of similar organisms interbreeding to prduce fertile young

Question 4

Deleteriois sequence

Answer 4

DNA sequence that lowers survival rate

Question 5

Directional selection

Answer 5

Natural selection that tends to favour an extreme value of a varied characteristic

Question 6

Ecological barrier

Answer 6

Barrier to gene flow caused by ecological preference differences between individuals

Question 7

Evolution

Answer 7

Changes to organisms over time that are mainly caused by natural selection

Question 8

Genetic drift

Answer 8

Random changes to DNA sequences

Question 9

Geographical barrier

Answer 9

Physical barrier to gene flow, such as a mountain or river

Question 10

Horizontal inheritance

Answer 10

Inheritance of genetic material within a generation

Question 11

Hybrid zone

Answer 11

Region in which frequent interbreeding between two species occurs

Question 12

Natural selection

Answer 12

Process that ensures survival of the fittest

Question 13

Sexual selection

Answer 13

Natural selection of characteristics that increase reproductive success

Question 14

Speciation

Answer 14

Evolutionary process by which new species are formed

Question 15

Stabilising selection

Answer 15

Natural selection that favours a middle value of a varied characteristic

Question 16

Sympatric barrier

Answer 16

behavioural or ecological barrier to the flow of genes

Question 17

Sympatric speciation

Answer 17

Speciation in which gene flow is prevented by ecological or reproductive barriers

Question 18

Vertical inheritance

Answer 18

Inheritance of genetic material from parents by offspring

Question 19

Virus

Answer 19

Has genetic material enclosed in a protein coat

Question 20

Speciation in which gene flow is prevented by a geographical barrier

Answer 20

Allopatric speciation

Question 21

Barrier to gene flow caused by behavioural differences between individuals

Answer 21

Behavioural barrier

Question 22

Group of similar organisms interbreeding to prduce fertile young

Answer 22

Biological species

Question 23

DNA sequence that lowers survival rate

Answer 23

Deleteriois sequence

Question 24

Natural selection that tends to favour an extreme value of a varied characteristic

Answer 24

Directional selection

Question 25

Barrier to gene flow caused by ecological preference differences between individuals

Answer 25

Ecological barrier

Question 26

Changes to organisms over time that are mainly caused by natural selection

Answer 26

Evolution

Question 27

Random changes to DNA sequences

Answer 27

Genetic drift

Question 28

Physical barrier to gene flow, such as a mountain or river

Answer 28

Geographical barrier

Question 29

Inheritance of genetic material within a generation

Answer 29

Horizontal inheritance

Question 30

Region in which frequent interbreeding between two species occurs

Answer 30

Hybrid zone

Question 31

Process that ensures survival of the fittest

Answer 31

Natural selection

Question 32

Natural selection of characteristics that increase reproductive success

Answer 32

Sexual selection

Question 33

Evolutionary process by which new species are formed

Answer 33

Speciation

Question 34

Natural selection that favours a middle value of a varied characteristic

Answer 34

Stabilising selection

Question 35

behavioural or ecological barrier to the flow of genes

Answer 35

Sympatric barrier

Question 36

Speciation in which gene flow is prevented by ecological or reproductive barriers

Answer 36

Sympatric speciation

Question 37

Inheritance of genetic material from parents by offspring

Answer 37

Vertical inheritance

Question 38

Has genetic material enclosed in a protein coat

Answer 38

Virus