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2.2.1 The Biological Basis of Individuality and The Monitoring of Fetal Development

(a) The Importance of Meiosis
Meiosis is needed to produce sex cells, or gametes. Sex cells must only contain one set of chromosomes;
making then haploid cells.
Meiosis is two stage division. Stage 1 produces 2 haploid cells,…

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(f) Measuring Fetal Growth
An ultrasound scan is used to check the baby's size and to make sure that they are developing correctly.
The crown rump length is the length of baby's back from the top to the head to the bottom. The
biparietal diameter is the width of the…


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