Genes, Chromosomes and DNA

Question 1

What do most cells in the body contain?

Answer 1

A nucleus

Question 2

The nucleus contains your ____ ____ in the form of ____

Answer 2

The nucleus contains your genetic material in the form of chromosomes

Question 3

How many pairs of chromosomes does the human cell contain? (barring gametes)

Answer 3

23 pairs

Question 4

What do chromosomes carry?

Answer 4

Genes

Question 5

What do different genes control?

Answer 5

The development of different characteristics e.g. hair colour

Question 6

A gene is a ____ ____ of a chromosome, which is quite a ____ ____ of DNA

Answer 6

A gene is a short length of a chromosome, which is quite a long length of DNA

Question 7

Put chromosomes, genes, and DNA in order of size, largest to smallest

Answer 7

1. Chromosomes
2. Genes
3. DNA

Question 8

What are different versions of the same gene called? Give an example

Answer 8

Alleles

Blue eye or brown eye alleles

Question 9

The DNA is ____ ____ to form the ____ ____ of the chromosome

Answer 9

The DNA is coiled up to form the double helix of the chromosome

Question 10

Sketch a pair of chromosomes

Answer 10

Can ignore labels

Question 11

Sketch a gene

Answer 11

Question 12

Sketch a nucleus, pair of chromosomes, and a gene

Answer 12