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Aneuploidy

An abnormality involving a chromosome Number that is not an exact multiple of the haploid number (one chromosome set is incomplete). Organisms that possess that lack 1 or possess 1 extra chromosome in their chromosome set, such as downs syndrome sufferers who possess 47 chromosomes (46 being the norm in humans), 1 more than the species chromosome Number.


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disadvantage of having multiple chromosomes

... disadvantage: Would a disadvantage be that if a polyploid mates with a normal diploid, the F1 hybrid is triploid; this causes massive amounts of aneuploidy in the offspring, leading to almost invariable sterility of hybrid offspring?? I was told these are not good answers???? Thats when I came ...

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by kikkid
Mon Sep 24, 2007 5:10 am
 
Forum: Genetics
Topic: disadvantage of having multiple chromosomes
Replies: 3
Views: 1159

Downs Syndrome - Trisomy 21?

Most trisomies are lethal. Having extra chromosomes is not good and wouldn't make you 'brighter'. You would likely be unviable. Do some research on aneuploidy.

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by James
Fri Feb 16, 2007 5:30 pm
 
Forum: Molecular Biology
Topic: Downs Syndrome - Trisomy 21?
Replies: 10
Views: 1522

Re: Genetic Questions - please help!

... pool. if the organism dies,the mutation will not be passed down. (Q5) Humans with aneuploid karyotypes occur but are non-viable. Why is this?? aneuploidy refers to certain chromosomes are represented in an usual number of chromosomes rather than 2. a question to pro, down's sydrome is the usual ...

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by chenwithasterisk
Fri Jan 05, 2007 5:24 am
 
Forum: Genetics
Topic: Genetic Questions - please help!
Replies: 4
Views: 1395

Miscarriages???

... babies are conceived with chomosome anomaly, only 10 will survive is way to look at it. And chomosome anomaly refer to any deletion, inversion, aneuploidy, duplication, translocation, fragile site, etc.. Anyway, hope explanation helps.

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by damien james
Fri Mar 31, 2006 6:33 am
 
Forum: Human Biology
Topic: Miscarriages???
Replies: 17
Views: 2491

meiosis

No, actually mithril is right. It will result in aneuploidy or polyploidy. They do not explode

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by MrMistery
Mon Jun 06, 2005 7:37 pm
 
Forum: Cell Biology
Topic: meiosis
Replies: 12
Views: 2982
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