bi30 - Sexualreproduction LMathias Sexualreproduction

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Sexual reproduction L Mathias
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Sexual reproduction Sexual reproduction is the production of offspring from two parents  using gametes . The cells of the offspring have two sets of chromosomes  (one from each parent), so are diploid. Sexual reproduction involves two  stages: Meiosis- the special cell division that makes haploid gametes  Fertilisation- the fusion of two gametes to form a diploid zygote
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Basic lifecycle of sexually reproducing  organisms
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Meiosis Meiosis is a form of cell division. It starts with DNA  replication, like mitosis, but then proceeds with two  divisions one immediately after the other. Meiosis  therefore results in four  daughter cells rather than the  two cells formed by mitosis. It differs from mitosis in  two important aspects 
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Meiosis 2 The chromosome number is halved from the diploid  number (2n)  to the haploid number (n)
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bi30 - Sexualreproduction LMathias Sexualreproduction

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