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Haploid chromosome number (view source)
Revision as of 03:49, November 15, 2009
, 03:49, November 15, 2009→Ploidocity
Most animals we find are diploid, although it is no less common in plants. Diploid means they have two copies of each chromosome. In this case we may have 46 chromosomes, but they represent two copies of 23. So n=23.
Most animals we find are diploid, although it is no less common in plants. Diploid means they have two copies of each chromosome. In this case we may have 46 chromosomes, but they represent two copies of 23. So n=23.
== Ploidocity ==
== Ploidicity ==
In plants we find that they may be triploid of more. No matter how many copies we find the underlying n number is divided by the number of copies that represent the same information. If we have 5-ploid animal with 115 chromosomes that represent still only 23 homologous pairs (same info) then we have an n of 23 (115/5).
In plants we find that they may be triploid or more. No matter how many copies we find the underlying n number is divided by the number of copies that represent the same information. If we have a 5-ploid animal with 115 chromosomes that represents still only 23 sets of homologous chromosomes (same info) then we have an n of 23 (115/5).
==References==
==References==