agree or disagree?- haploid-diploid

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baikuza
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agree or disagree?- haploid-diploid

Post by baikuza » Thu Oct 20, 2005 12:09 pm

hi, everyone.
what is your oppinion about this(below)?

are u agree or disagree if organism normally is diploid?

and.. why? just give a short oppinion. (it's easy to read if it's only a few word, please do not make this to extendly)
:o :roll: :? 8)

and thanks y.

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Poison
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Post by Poison » Thu Oct 20, 2005 4:24 pm

If I understood correctly, No. There are haploid organisms as well as diploids and some are diploid in some period and haploid in some period you can see every form of these in algea.
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Post by MrMistery » Thu Oct 20, 2005 6:02 pm

Poison is right. Bacteria is haploid. Algae and inferior plants have a sequence of haploid and diploid generations. Animals are diploid.
By the way, plants are also poliploid :D
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zami'87.
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Post by zami'87. » Thu Oct 20, 2005 6:28 pm

Hey! First there is a difference in meaning between haploid number and monoploid number. In many plants and animals these 2 numbers are the same but in case of poliploidy-like in wheat there is difference. Wheat is heksaploid so 6x=42 so x=7. But gametes have 21 chromosomes so n=21.

Yeah agree folks!:)
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victor
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Post by victor » Fri Oct 21, 2005 11:27 am

Ok, call me stupid but I don't really know what the point and the purpose is... :?
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Post by MrMistery » Fri Oct 21, 2005 5:52 pm

The point and purpose of what?
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victor
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Post by victor » Mon Oct 24, 2005 11:35 am

I mean the poin of this question..I just get a lil bit confuse about that..anyone can make clear of this?
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Morris
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Post by Morris » Mon Oct 24, 2005 12:52 pm

Mammals as man are diploid, because there is a pairment in gene distribuition in cromosomes... Infact men lacking of a cromosome or that have genes silenced by mutation or that have more than two cromosome (as Down syndrome) have great problems in movement, speacking, thinking...

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Post by baikuza » Mon Oct 24, 2005 1:50 pm

mm....
okay, that was good answer.
so.. thanks. :wink:

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Post by Terry K. » Mon Oct 24, 2005 2:19 pm

as Morris said, a trisomy (3 chromosomes when there are only supposed to be 2) of the 21st pair of chromosomes results in down syndrome, but there are extrenuating circumstances that say that it is sometimes better to have a mutation of one pair that makes them superior to others, the research is still in the process, but the scientists behind it are getting close to figuring this out, and it would be huge for the genetics and hereditary sections of science as a whole. Getting back on track now, I believe that most cells are more diploid than haploid, only because cells will not divide until they need to(you get cut, burned, etc.) and they will sit in Go phase until this happens. In fact, cells are in Go phase for about 85% of their life. So my standpoint is that cells are more diploid than haploid. Just a cool fact, there are plant species with only 4 chromosome pairs and one with 764 pairs of chromosomes, not sure about the exact number, but it's up there really close to that.

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Post by MrMistery » Mon Oct 24, 2005 6:17 pm

2n=1260 in snake's tongue(i forget the real name...) :cry: :cry:
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Post by Terry K. » Mon Oct 24, 2005 7:23 pm

that's awesome, i wonder what would happen if they had trisomies of certain chromosome pairs :D

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