!ST bLOG

Friday, October 20, 2006

Which one do you like?

lamborghini Ferrari

What came first the CHICKEN or the EGG?

This question appears regularly in the question file, so let's take a shot at it.

In nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote.

Chickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken.

Prior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first

University

If any of you are interested in University for the future have a look at mine. Liverpool Hope.

University

Any one interested in University for years to come. My uni is Liverpool Hope, have a look !!!

Blogging Lesson

Just learning how to do this blogging thing, that this american guy Will Richardson has introduced me to. Any one heard of him? Clever guy!!

Theres a lot of stuff i thought i knew about but there is a lot more to learn. All these kids seem to know more about this than me and im in uni.

This seems good like, could come in useful in the future.