Search found 12 matches

by 45561
Sun Jun 03, 2007 7:34 pm
Forum: Biology Movies
Topic: Botany Videos of Tropisms
Replies: 1
Views: 3947

Thanks, those are quite interesting.
by 45561
Sun Jun 03, 2007 7:32 pm
Forum: Botany Discussion
Topic: Negative gravitropism
Replies: 1
Views: 5254

Negative gravitropism

Watching one of the botanical videos that daniel.kurz posted here (see link below), I noticed something interesting. The coleus shoot demonstrating a 'negative gravitropic' response moved down (i.e. clockwise) before it began to move in the opposite direction. The movement I'm talking about occurs i...
by 45561
Mon Mar 12, 2007 9:51 pm
Forum: PDF & Doc Files
Topic: Gray's anatomy
Replies: 7
Views: 15813

There's also a copy here - http://www.bartleby.com/107/ - though I don't know if that's the edition you're after.
by 45561
Mon Mar 12, 2007 9:45 pm
Forum: General Discussion
Topic: Question - which field?
Replies: 4
Views: 2378

Darby wrote:Keep studying. I fell in love with evolutionary theory early in my classwork, invertebrates when I took a class on them, then parasites when I went to graduate school in invertebrate zoology.


But do you know where you are heading?
by 45561
Sun Mar 11, 2007 7:43 pm
Forum: General Discussion
Topic: Question - which field?
Replies: 4
Views: 2378

Question - which field?

Hi, I'm a first-year biology student in the UK, and already the prospect of choosing second-year modules preys on my mind. Like a lot of scientists I'm interested in discovering new things and in how things work, but in biology there are so many different areas of study in which to do both these thi...
by 45561
Sun Mar 11, 2007 3:12 pm
Forum: Ecology
Topic: Did death evolve?
Replies: 114
Views: 102515

I was thinking there could have been a situation where reproduction was hindered due to the inability for organisms to die, thus death was favourable. I think that it's possible. Competition between parent and offspring may harm proliferation to some extent. If the parent dies, then it is no longer...
by 45561
Sun Mar 11, 2007 2:51 pm
Forum: Evolution
Topic: A Monkey's Uncle
Replies: 26
Views: 74438

JDavidE, a theory is based on fact but is not immutable. Theories aren't always perfect, and if contradictory evidence comes to light then you revise or scrap your theory. You still need to show evidence for scrapping the idea that Pan and Homo are related. An interesting point - one naturalist stat...
by 45561
Sat Mar 10, 2007 11:38 pm
Forum: Evolution
Topic: A Monkey's Uncle
Replies: 26
Views: 74438

I'm not quite sure that I follow your argument, but here are a couple of points: - Yes, evolution does not go from simple to complex. There is, however, a general trend toward increasing complexity. I'd cite hominids as an example, though I'm not sure if you'd believe me, so try instead parasites an...
by 45561
Sat Mar 10, 2007 9:28 pm
Forum: Evolution
Topic: A really tough (for me) evolution question...
Replies: 15
Views: 11673

Evolution is change between generations within a population, usually described as changes in allele frequency. I'd run with B.
by 45561
Sat Mar 10, 2007 9:01 pm
Forum: Evolution
Topic: Where are we heading to ?
Replies: 28
Views: 17552

I suppose an important question is whether or not a sample group of newborns from today could survive equally well if they were taken back, say, 100 years. (I'd roll out the nature versus nurture argument, but we'd be here forever.) Playing Devil's advocate for a moment, we may well be allowing gene...
by 45561
Sat Mar 10, 2007 8:51 pm
Forum: Evolution
Topic: Evolution - Natural Selection FLAWED?
Replies: 9
Views: 29108

I stopped reading when I got here: "However, no matter how long this process goes on, it will not transform those deer into another species. The weak deer are eliminated, the strong survive, but, since no alteration in their genetic data takes place, no transformation of a species occurs. Despi...
by 45561
Sat Mar 10, 2007 8:42 pm
Forum: Evolution
Topic: Just a simple question about Evolution
Replies: 44
Views: 25321

If one supports a view life where there is no aspect of design, then there need not be any purpose at all.
I liken it to knocking over a tin of paint and the paint forming a pretty pattern - the outcome is pretty but the odds of it happening were slim and there wasn't any purpose or planning.