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Triploid

triploid

(Science: genetics molecular biology) Having three times the haploid number of chromosomes.


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Trisomy 21 - Down Syndrome Not a Hereditary Disease

I know. I meant, that triploid organisms are not fertile and I do not know, whether organism with only one extra chromosome will be fertile, because theoretically the production of gametes should be arrested.

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by JackBean
Sun Nov 13, 2011 9:08 am
 
Forum: Human Biology
Topic: Trisomy 21 - Down Syndrome Not a Hereditary Disease
Replies: 6
Views: 3930

Mutation in fruit/vegetables

for example the seedless grapes are triploid hybrids. Triticale is hybrid of two different cereals. Papaya grown on Hawai should be GMO, because they had problems with some virus killing all their plantations.

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by JackBean
Wed Nov 02, 2011 5:53 pm
 
Forum: General Discussion
Topic: Mutation in fruit/vegetables
Replies: 1
Views: 1433

Trisomy 21 - Down Syndrome Not a Hereditary Disease

... it doesn't have to be hereditary. Question is, what will happen, when the cell will try to split 3 chromosomes 21 into 2 new cells. Usually triploid organisms do not produce gametes, so the question is whether people with Down syndrom are fertile?

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by JackBean
Tue Oct 18, 2011 3:42 pm
 
Forum: Human Biology
Topic: Trisomy 21 - Down Syndrome Not a Hereditary Disease
Replies: 6
Views: 3930

Sporophyte, spermatogenesis and oogenesis?

... they are referring to microsporocytes?- 46 chromosomes 92 chromatid? magasporocyte and microsporocytes=diploid 46 and 92 chromatid endosperm = 3N triploid so 69 chromosome 69 chromatid? antipodal and tube cell= 23 chromosomes and 23 chromatid flower petal and parencyma cell of the leaf- I'm assuming ...

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by jacobamark99
Fri May 27, 2011 5:38 pm
 
Forum: Genetics
Topic: Sporophyte, spermatogenesis and oogenesis?
Replies: 0
Views: 3541

Blood type changing spontaneously with a transplant?

... were supposed to be hit by the chemo, they may have tetraploidy and thus your eggs would be diploid. In consequence, your children would be triploid and thus sterile. But that is only imaginary hypothesis! You need to have your daughter tested.

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by JackBean
Mon May 02, 2011 10:26 am
 
Forum: Human Biology
Topic: Blood type changing spontaneously with a transplant?
Replies: 18
Views: 29292
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