4 (a) The diagram shows the stages involved in the production of a human embryo. egg cell chromosomes sperm cell chromosomes fertilisation zygot e (fertilised egg) 46 chromosomes cell division cells of the embryo (i) Complete the diagram by stating the number of chromosomes found in the egg cell, the sperm cell and each cell of the embryo. (ii) Use the words in the box to complete the sentences. The sperm cells are produced by a process called ________________. This process produces ________________ cells.

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4 (a) The diagram shows the stages involved in the production of a human embryo - Edexcel - GCSE Biology - Question 4 - 2017 - Paper 1

Question 4

4 (a) The diagram shows the stages involved in the production of a human embryo. egg cell chromosomes sperm cell chromosomes fertilisation zygot e (fe... show full transcript

Worked Solution & Example Answer:4 (a) The diagram shows the stages involved in the production of a human embryo - Edexcel - GCSE Biology - Question 4 - 2017 - Paper 1

Step 1

Complete the diagram by stating the number of chromosomes found in the egg cell, the sperm cell and each cell of the embryo.

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Answer

The egg cell contains 23 chromosomes, the sperm cell also contains 23 chromosomes, and each cell of the embryo contains 46 chromosomes.

Step 2

Use the words in the box to complete the sentences.

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Answer

The sperm cells are produced by a process called meiosis. This process produces haploid cells.

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4 (a) The diagram shows the stages involved in the production of a human embryo - Edexcel - GCSE Biology - Question 4 - 2017 - Paper 1

Worked Solution & Example Answer:4 (a) The diagram shows the stages involved in the production of a human embryo - Edexcel - GCSE Biology - Question 4 - 2017 - Paper 1

Complete the diagram by stating the number of chromosomes found in the egg cell, the sperm cell and each cell of the embryo.

Use the words in the box to complete the sentences.

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