Chap 12 Variation F5

Question 1

Definition of Variation

Answer 1

pg 1

Question 2

What is variation in a population

Answer 2

the ability to adapt to changing environment

Question 3

Definition of natural selection

Answer 3

pg1

Question 4

Necessity of variation(3)

Answer 4

pg 1

Question 5

Definition of continuous variation

Answer 5

pg 2

Question 6

Examples of continous variation

Answer 6

height, skin

Question 7

Continous varaiation is the result_____

Answer 7

2

Question 8

Definition of discontinous variation

Answer 8

2

Question 9

eg of discontinous variation

Answer 9

ab blood grp ,eye colour,fingerprint pattern,gender

Question 10

similarities between continuous and discontinuous variation (3)

Answer 10

3

Question 11

diff between continuous and discontinuous variation (6)

Answer 11

3

Question 12

variation in phenotype is caused by (3)

Answer 12

3

Question 13

4 genetic factors in variation

Answer 13

4

Question 14

Crossing over occurs between(7)

Answer 14

4

Question 15

Independant assortment of chromsosomes(2)

Answer 15

5

Question 16

Ranodom fertilisation

Answer 16

5

Question 17

Definition of mutation (3)

Answer 17

Permanent chamge which……….(6)

Question 18

Why is effect of environmental variation small?

Answer 18

6

Question 19

Why environmental variation cannot be inherited

Answer 19

only can change alllele frequency

Question 20

Environmental factors in plants

Answer 20

light,ph value of soil

water supply

Question 21

Environmental factors in humans

Answer 21

food
sunlight
climate
exercise

Question 22

Phenotype=

Answer 22

8

Question 23

When is dominant trait observed

Answer 23

9

Question 24

Why mutations occur(4)

Answer 24

14

Question 25

What is mutagen

Answer 25

substance which causes mutation/increase mutation rate

Question 26

Types of mutagen

Answer 26

14

Question 27

Types of gene mutation(3)

Answer 27

15

Question 28

When gene mutation occur

Answer 28

15

Question 29

Effects of gene mutation

Answer 29

15

Question 30

Causes of sickle cell anemia

Answer 30

16

Question 31

causes of albinism

Answer 31

17

Question 32

Causes of cystic fibrosis

Answer 32

17

Question 33

Causes of haemophilia

Answer 33

18

Question 34

Types of chromosomal mutation(4)

Answer 34

19

Question 35

Effects in chromosomal duplication (2)

Answer 35

20

Question 36

Effects in chromosomal inversion

Answer 36

20

Question 37

Effects of translocation (2m)

Answer 37

20

Question 38

Explain changes in chromosomal number (3m)

Answer 38

21

Question 39

Down syndrome

Answer 39

22

Question 40

turner syndrome

Answer 40

22

Question 41

klinefelter syndrome

Answer 41

23

Question 42

Jacob syndrome

Answer 42

23

Question 43

Similarities and diff between mutation in somatic cells and gametes

Answer 43

24