Genes and Reproduction

Question 1

What does the nucleus contain?

Answer 1

Genetic material in the form of chromosomes

Question 2

How many pairs of chromosomes are inside a cell?

Answer 2

23 pairs one from each parent

Question 3

What do genes control?

Answer 3

Different characteristics

Question 4

What is a gene?

Answer 4

Short length of a chromosome

Question 5

What is a DNA molecule?

Answer 5

Long length of DNA

Question 6

What is DNA?

Answer 6

DNA is cooked up to form the arms of the chromosomes

Question 7

What is sexual reproduction?

Answer 7

Involved the fusion of male and female gametes, and the offspring contains a mixture of parents genes

Question 8

What is used in sexual reproduction?

Answer 8

Mothers and fathers gametes, egg and sperm

Question 9

How many chromosomes does each gamete contain?

Answer 9

23

Question 10

What is asexual reproduction?

Answer 10

There is only one parent, no fusion of gametes, no mixing of chromosomes, the offspring is genetically identical to the parent

Question 11

What happens in asexual reproduction?

Answer 11

X-shaped chromosomes have two identical halves so each chromosome splits to form identical sets of ‘half chromosomes’, then a membrane forms around each set and DNA replicates itself