Cycle haploîde et diploîde*

                                



The Haploid-diploid Cycle of Sexual Reproduction

  ©1998 by Alberts, Bray, Johnson, Lewis, Raff, Roberts, Walter.   http://www.garlandscience.com/ECB/about.html  

  Published by Garland Publishing, a member of the Taylor & Francis Group.

 

Legend:

(A) Cells in higher eucaryotic organisms proliferate in the diploid phase to form a multicellular organism; only the gametes (the egg and the sperm) are haploid. (B) Sexual reproduction parcels out chromosomes in new combinations. Humans, for example, have 23 chromosomes per gamete. For simplicity, only one chromosome is shown for each gamete.

 


Modifié le: Wednesday 6 January 2016, 10:17