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Figure 20-6

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   Comparison of meiosis and normal cell division

As in the previous figure, only one pair of homologous chromosomes is shown. In meiosis, following DNA replication, two nuclear (and cell) divisions are required to produce the haploid gametes. Each diploid cell that enters meiosis therefore produces four haploid cells, whereas each diploid cell that divides by mitosis produces two diploid cells.

Copyright © 1994 Bruce Alberts, Dennis Bray, Julian Lewis, Martin Raff, Keith Roberts, and James D. Watson. Published by Garland Publishing, a member of the Taylor & Francis Group. No part of the publication may be reproduced or used in any form or by any means known now or invented hereafter without the permission of the publisher.