5.3

Question 1

mutagenic influences

Answer 1

chemical substances and radiation that can cause mutations.

Question 2

albino

Answer 2

Mutant in which the body is unable to produce pigment.

Question 3

mutation

Answer 3

Sudden change in the genotype cause by damage to the chromosome.

Question 4

cancer

Answer 4

Malignant tumour.

Question 5

metastasis

Answer 5

New tumours forming in other organs because cells from a tumour end up in the blood.

Question 6

Proteins

Answer 6

Substances that are largely responsible for the colour, shape and function of your body.

Question 7

base pair

Answer 7

pairs of bases, either A-T or C-G.

Question 8

mailignant tumour

Answer 8

Rapidly growing tumour that disrupts the structure of tissues.

Question 9

tumour

Answer 9

Swelling in which the cells can divide without limits.

Question 10

Allele pair

Answer 10

The two alleles of a gene.

Question 11

base

Answer 11

Building block of DNA.

Question 12

Allele (gene variant)

Answer 12

The information in a gene.

Question 13

Mutated

Answer 13

Situation in which one or more alleles have been changed.