Sexual Reproduction and Meiosis

Question 1

What is meiosis?

Answer 1

A type of cell division involved in sexual reproduction

Question 2

What is meant by ‘diploid’?

Answer 2

Diploid describes a cell with the full number of chromosomes

Question 3

What is meant by ‘haploid’?

Answer 3

Haploid describes a cell with half the number of chromosomes of a normal cell

Question 4

Gametes are produced by meiosis. Human gametes are egg and sperm cells.

What do gametes contain?

Answer 4

Half the number of chromosomes there are in other body cells

Question 5

State the name given to the cell formed from two gametes at fertilisation.

Answer 5

Zygote

Question 6

What is produced as a result of meiosis?

Answer 6

4 genetically unique, haploid daughter cells

Question 7

(Exam-style question)

Explain why haploid gametes are necessary for sexual reproduction.

Answer 7

Haploid gametes are needed so that when two gametes fuse at fertilisation, the zygote ends up with the full number of chromosomes

Question 8

(Exam-style question)

Answer 8

Question 9

(Exam-style question)

Answer 9