Specialised cells for reproduction

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Across

1. The scientific name for a sex cell. (6)

6. One set of chromosomes (half the normal number). (7)

9. The male sex cell. (5)

10. The point where an egg and sperm fuse their nuclei together to make one whole cell. (13)

Down

2. The female sex cell. (3)

3. A ball of unspecialised cells ready to make a baby. (6)

4. When cells change from simple to specialised we call this... (15)

5. The genetic material, DNA, is packaged into structures called... (11)

7. Two sets of chromosomes (the normal number in a body cell). (7)

8. The first cell of a new human life. (6)

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