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Ploidy

ploidy

The number of sets of chromosomes within a cell or organism. Each set is designated n so one set is n is haploid, two sets is 2n is diploid, three sets is 3n is triploid, four sets is 4n is tetraploid, etc. Also, unspecified multiple sets (but more than two) is polyploidy, and extremely large number of sets may be designated by number (for example 15-ploid for fifteen sets). The number of chromosome sets that make up the [[genome of an organism, e.g. [[polyploidy.


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Two questions

You mean contraction of pupils? http://en.wikipedia.org/wiki/Miosis How is that related to ploidy?

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by JackBean
Wed Sep 12, 2012 11:36 am
 
Forum: Genetics
Topic: Two questions
Replies: 5
Views: 2484

I have some questions over Binary Fission and Mitosis...

in mitosis both parent and daughter cells have the same ploidy

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by JackBean
Fri May 04, 2012 7:25 am
 
Forum: Cell Biology
Topic: I have some questions over Binary Fission and Mitosis...
Replies: 2
Views: 2765

life cycle of buffing and fission yeast

... a morphology. It's generally assumed that any fungus can grow in that morphology under the right conditions and the morphology is not exlcusive to ploidy. We're most familiar with those fungi that exhibit the yeast mophology under routine culture conditions.

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by JorgeLobo
Thu Mar 22, 2012 2:32 pm
 
Forum: Cell Biology
Topic: life cycle of buffing and fission yeast
Replies: 8
Views: 3328

polyploid

kyros: IMHO depends on how much ploidy is the plant. If is it tetraploid, the offspring would be triploid a thus should be sterile. However, if it was hexaploid, the offspring should be tetraploid and thus now problem...

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by JackBean
Mon May 10, 2010 7:50 pm
 
Forum: Evolution
Topic: polyploid
Replies: 5
Views: 3466

ploidy of endosperm

A pollen grain from a tetraploid plant fuses with a diploid plant. Resulting seed will have ....n endosperm?? {ex. 1n, 2n, 3n, 4n, etc.......}

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by agent007
Fri Apr 16, 2010 1:14 am
 
Forum: Botany Discussion
Topic: ploidy of endosperm
Replies: 11
Views: 5944
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