Search found 5 matches

by thanos00
Mon Jun 05, 2006 2:45 pm
Forum: Evolution
Topic: Why sharks completed the evolutions 100 million years ago??
Replies: 10
Views: 4612

If there is no reason to change why should sharks change. As evolution says: "If it works, keep it"

I like your site Prionace.
by thanos00
Mon Jun 05, 2006 2:40 pm
Forum: Microbiology
Topic: having two or more nucleus... is it better?
Replies: 11
Views: 9797

It depends on the environment around the organism using the double nuclei cell. Having two nuclei means using more energy, but since the 2-nuclei cell organisms still exist this must be an evolutionary advantage (for the specififc organism).
by thanos00
Sat Jun 03, 2006 8:57 am
Forum: Microbiology
Topic: Gene expression in Prokaryotes, Oops!?!
Replies: 3
Views: 2641

Gene expression in Prokaryotes, Oops!?!

The problem is simple, I do not understand what Gene expression in Prokaryotes is about and I have my Bio exam in 5 days time. This type of gene expression was discovered by F. Jacob and J.Monod. Okay, I can learn that. But what happens when I get to things like Regulators, Promoters, Operators and ...
by thanos00
Sat Jun 03, 2006 8:32 am
Forum: Cell Biology
Topic: Crossing-over
Replies: 2
Views: 1900

Crossing-over

Does crossing-over have only positive effects or can it also cause problems? :shock: :?: :shock:
by thanos00
Thu Apr 13, 2006 11:12 am
Forum: Zoology Discussion
Topic: METAMORPHOSIS
Replies: 2
Views: 4180

METAMORPHOSIS

does anyone have any info on the advantages and disadvantages of the compete/incomplete metamorphosis of insects