Term 1

Question 1

Variation

Answer 1

Is the differences in between individuals

Question 2

Variation because of

Answer 2

Inherited features

Environmental features

Question 3

In every nucleus there are

Answer 3

Long thread-like structures called chromosomes

Question 4

Each chromosome is made up of

Answer 4

Many units called genes

Question 5

Genes

Answer 5

Determine the characteristics of an individual for example hair colour

Question 6

In a sex cells there are only

Answer 6

23 chromosomes, they are not in pairs

Question 7

DNA is a

Answer 7

Double helix structure

Question 8

The 4 substances in DNA are

Answer 8

Tynine (tiny apple)
Adenine

Guanine (green cows)
Cytosine

Question 9

The sides of DNA is

Answer 9

Sugar phosphate

Question 10

An allile

Answer 10

Is a version of a gene

Question 11

Genotype

Answer 11

The alleles you get

Question 12

Phenotype

Answer 12

Characteristics you display

Question 13

Changes in the environment that can mean disadaption of organism

Answer 13

Changes in physical environment

Competition with other organisms

Diseases

Human activities Hunt, habitat destruction, pollution

Question 14

Section of DNA code for

Answer 14

Protein