Posted by:
SL Cabbie
(
)
Date: December 12, 2010 03:12AM
The amount of information in the genome."
Among plants, the issue of "polyploidy" operates; chromosomes--which are simply long strands of DNA--exist in pairs, and if there's an error in cell division. the number of the same paired chromosome will increase from one pair to two...
http://www.answers.com/topic/polyploidThis will serve to increase the number of genes in a cell, and one way this is manifest is via "gene expression," which is a cornerstone of contemporary understandings of evolution.
One way genetic differences are manifest is the "length of time" that a gene is activated... An organism may have genes that will allow it to grow several feet in legnth, but if those genes only operate for a short time, then the organism will not grow to its genetic potential.
However, when the same chromosomes are present in double--or even triple--the number present in the ancestral species, then when the gene is "expresed," significant changes can occur.
A plant with tetraploidal chromosomes, for example, might have larger and more impressive flowers than its diploidal relatives, or larger leaves which might convey a survival advantage in a favorable environment (or a disadvantage in say, a desert where smaller leaves would mean less evaporation).
Among animals, genetic variety is enhanced by "gene swapping," where lengths of chromosomes "migrate" to their opposite site on the paired chromosomes. Then, when meiosis occurs that reduces the paired chromosomes to their haploid numbers, new pairings occur when the sperm/ovum union takes place in sexual reproduction.
Seriously, the stuff in these videos is so bad it's difficult to remain polite in discussing them. As my great-grandmother used to say, "You have no defense against a liar."
These lies might find acceptance among the home-schooled crowd, but they leave serious scholars just shaking their heads at the incredible volume of demonstrable ignorance.
And I don't know how to spare you feelings, but you demonstrate a large measure of that same ignorance by passing this crapola off as legitimate.