Biology - November 2007

As far as i understand (no very much) a human cell contains 23 pairs of chromosones. But i am also told during fertilisation we have 23 'non-paired' chromosones in each gamete which eventually mix. That doesn't make 23 pairs though- it makes 46 seperate chromosones,

I'm CONFUSED.
Any help would be greatly appreciated. Thanks!!!

2007-11-17 05:53:34 · 4 answers · asked by Anonymous

the future of biotechnology is not just with plants but fish splised tomato is highly likely. it would be just like a tomato but it has the good proteins of a fish in it. no physical change only chemical. but I'm more into the Human interact with and control technology with their mind part for biotech(if im thinking of the wrong thing plz correct me this will be my job in the future) i think that human controlling tech with their minds and having more advanced prosthetics we would be in a would of i show i watch.(Ghost in a Shell) which is a world in the future where most humans change from a fregal human body to a sturdy prosthetic body controlled by the only bio part needed for them (the brain) which hints the term Ghost in a Shell but there r plenty of good things about this field but there just this one thing that will happen in the future if we ever find out how to contain the brain in a shell and keep it alive and working with technology

2007-11-17 05:45:26 · 2 answers · asked by TT.TT 1

a. giving narrow spectrum drug
b. culturing the pathogen and identifying it
c. performing the disk diffusion essay
d. using a broad spectrum so that the chance of killing the pathogen is greater

2007-11-17 05:38:21 · 2 answers · asked by Anonymous

I was watching "I am my own twin" on the Discovery channel and it documented people that carry their twins DNA.

In short: because they carried two seperate DNA's (one from the fused twin) their children's DNA didnt match and it looked as though the children didnt belong to the mother.


In the case of paternity, can the same thing occur? Can a woman take a man for paternity and the test come back negative? Even though he may very well be the father because he carries two sets of DNA?

2007-11-17 05:30:08 · 3 answers · asked by ♣DreamDancer♣ 5

Consider:

Georges Cuvier
Charles Lyell
Louis Aggassiz
Colin Patterson
Pierre Grasse
RH Brady
Douglas Dewar
David Raup
Michael Denton

et al.

2007-11-17 04:21:27 · 5 answers · asked by Jack 5

diploid(DIH ployd),haploid(HAPloyd), heterozygous, sexula reproduction,homologous chro, crossing over,meiosis,zygote,genetic recombination, gametes, dominant, pollination

7.a cell w/ 2 of each kind of chromosome is called___?
8._____are sperm or egg cells.
9. a cell with one of each kind of chromosome is an ___cell.
10.____ chromosomes have genes for the sametraits in the same order on both chromosomes.
11. parent cells make gametes in a process called_____.
12. a(n)_____ is the cell created when a sperm enters an egg.
13._____ _____occurs when male and female gametes join to make a new liveing orgamism.
14. when nonsister chromatids exchange genes, its called _____ ______.
15._____ _____ results in genetic variety.

2007-11-17 03:46:31 · 6 answers · asked by boo 2

If white reflects heat and black absorbs heat why are people coloured this way. Simply why are people as they are? Animals have camouflage because of predetors and their bodies adapt to how they live. So whats the answers please

2007-11-17 01:20:16 · 36 answers · asked by Johnny Tee 2

2007-11-16 21:26:13 · 5 answers · asked by Anonymous

The Bible DOES NOT use the Scientific Method. Any chain of reasoning that does not involve the Scientific Method cannot be considered science, EVEN IF that chain of reasoning is correct. (Math, for example). Therefore, the Bible is not science. Why can't fundamentalists see this?

2007-11-16 21:19:20 · 8 answers · asked by Anonymous

Which of the following is the most important force in shaping evolution?

a. random events

b. geological change

c. biological research

d. natural selection

e. the fixity of species

2007-11-16 19:32:26 · 6 answers · asked by dreams 2

By correlation, I mean a positive correlation, ie. the more intelligent a person is the more likely it will be that they are also attractive.

Most of the time, at least. I realise there are bound to be exceptions.

This is something that I've observed for quite some time now, and several of my friends agree. However, this is just a speculation, and I could be completely wrong.

Is anyone able to explain why this may or may not be true, and why?

Much appreciated!

2007-11-16 19:06:14 · 17 answers · asked by [operatic stock character] 4

An echinoderm has an internal network of water-filled canals called the water vascular system..
True
False
Some sponges live on lake bottoms, while others are found on the seafloor.
True
False
Leeches are parasitic roundworms.
True
False
In clams and oysters, two shells are held together by powerful muscles—a trait common to all cephalopods.
True
False
Some sea urchins defend themselves using long, sharp spines.
True
False
If an animal’s blood never comes in direct contact with its tissues, the animal has an open circulatory system.
True
False
One of the common features of arthropods is a tough exoskeleton.
True
False

The process in which an arthropod sheds its skeleton and manufactures a larger one is called metamorphosis.
True
False
The three largest groups of arthropods are the crustaceans, arachnids, and insects.
True
False

In a lobster, the carapace is the part of the skeleton that covers the abdomen.
True
False

2007-11-16 18:36:49 · 9 answers · asked by CG ~!~ 2

^_^

2007-11-16 18:23:55 · 4 answers · asked by sonny 1

2 letters

2007-11-16 17:04:35 · 3 answers · asked by goingcrazy!! 1

A plasmid is a circular DNA molecule that scientists use to transform bacteria and plants.
 
Plasmids are naturally found in some ____________________.

a.
insects
c.
plants
b.
bacteria
d.
humans

2007-11-16 14:57:21 · 3 answers · asked by M 3

2007-11-16 14:54:57 · 1 answers · asked by Anonymous

I have to do a cell project on animal cells I am totally clueless. I cannot use food products.Any suggestions?

2007-11-16 14:12:21 · 8 answers · asked by Cortney Rakes 1

10 points!

2007-11-16 13:58:06 · 5 answers · asked by onetreehunny 4

Why haven't ALL of the monkies 'evolved' *cough cough* to become humans?


Evolution - the LOL Theory!

2007-11-16 13:54:16 · 9 answers · asked by Je Marche Drôle 3

My reasoning is that physical changes would be caused by changes in the genes and changes in genes would be retained and passed down the generations.

2007-11-16 11:18:08 · 9 answers · asked by purplepeace59 5

they depend on energy stored in chemical bonds by autotrophs for their food energy?

I am making sure ! I need an A on my test!thanks!

2007-11-16 10:39:28 · 1 answers · asked by Lorelei's Mommy ( & prego) 5

2007-11-16 09:04:07 · 2 answers · asked by Anonymous

Are these terms tautalogical formulations? If so, how?

Love jack

2007-11-16 07:54:33 · 3 answers · asked by Jack 5

I can't figure this one out.

2007-11-16 07:44:40 · 5 answers · asked by Anonymous

This is about the theory of evolution. If we evolved from apes, or fish or whatever, how did that very first baby, the very first, how did it live? How did it learn to survive? Being young it could not have reproduced and adapted. Does this not prove that there had to be some higher power that created humans?

2007-11-16 07:39:45 · 9 answers · asked by Clannad 2

2007-11-16 07:19:05 · 4 answers · asked by Jack X 2

Why did humans and hominids lose their fur?

2007-11-16 07:10:43 · 8 answers · asked by Jack X 2

Hi,
For Biology homework, I have to research exactly how solvents affect the nervous system but I can't really find it anywhere on the internet - it's all a bit brief! Just a few points would be helpful - I'm not the sort of person to ask for my homework to be done for me!

Thanks!

2007-11-16 07:01:24 · 6 answers · asked by Anonymous

dna is a huge molecule but if there are 23 pairs of chromosomes , so the dna is not continuous... is it?

2007-11-16 06:43:23 · 4 answers · asked by Anonymous

2007-11-16 06:31:58 · 6 answers · asked by Heather 2