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Chromosome Loss

The causality where a chromosome is missing from the new cell created via cell division.

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Why is the transcription of the chromosome that carries the dominant gene preferrable to the one that carries the recessive ... polypeptide, while the recessive gene codes for an afunctional one. (see loss of function mutation ) There may be other mechanisms resulting in dominant/recessive ...

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by wildfunguy
Sat Aug 10, 2013 6:02 pm
Forum: Cell Biology
Topic: Do chromosomses ever get competitive?
Replies: 9
Views: 11232

Reasons for Skepticism on the Endosymbiosis?

... ( Fukuhara et al., 1993 ; Drissi et al., 1994 ). In the case of linear chromosomes, the DNA polymerase enzymes are unable to replicate right to ... if genes for mitochondrial proteins existed in the nucleus prior to loss of genes in the mitochondria, the problem remains, where did the signal ...

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by SuperfluousAvatar
Thu Jan 12, 2012 7:43 pm
Forum: Cell Biology
Topic: Reasons for Skepticism on the Endosymbiosis?
Replies: 0
Views: 7674

Re: Evolution of sexual reproduction

... in 2007 entitled:- The Evolutionary History of Human and Chimpanzee Y-Chromosome Gene Loss. http://mbe.oxfordjournals.org/cgi/reprint/24/3/853 This research compares human and chimpanzee ...

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by jevg
Tue Aug 17, 2010 4:25 pm
Forum: Evolution
Topic: Evolution of sexual reproduction
Replies: 29
Views: 36334

Chromosome translocations?

it depends on the segregation of the homologous chromosomes whether the reciprocal translocation is balanced or imbalanced. Genetic ... normal and one abnormal chromosome is transferred to a cell this results in a loss/excess of certain genes. This would not be the case if the two normal chrom ...

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by sorin
Thu May 13, 2010 1:39 pm
Forum: Genetics
Topic: Chromosome translocations?
Replies: 2
Views: 3160

How often do mutations occur?

... offspring, because they have no healthy allele in the form of another X-chromosome. Duchenne muscular dystrophy is one such example, causing severe muscular loss that is always lethal, usually as soon as early teens to mid 30s. If the mutation is ...

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by biohazard
Mon Oct 12, 2009 6:27 am
Forum: Genetics
Topic: How often do mutations occur?
Replies: 16
Views: 25050
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