Biology - August 2007

2007-08-05 16:55:29 · 1 answers · asked by ilovestitch 1

Fst = (Ht-Hs)/Ht
Where Ht is the expected heterozygosity of the total population
andHs is the average expected heterozygosity from within each population

If there are two populations
Then
pop 1 :p=0.76,q=0.24
pop 2 :p=0.80,q=0.20
therefore
2pq=2 x 0.76 x 0.24 = 0.3648 in pop 1
and
2pq=2 x 0.80 x 0.20 = 0.32 in pop 2
This means that
Hs = (0.3648+ 0.32)/2= 0.3424

To calculate Ht
average p = (0.76+0.80)/2 =0.78
average q =(0.24+0.20)/2=0.22
therefore
Ht=2 x 0.78 x 0.22 = 0.3432

From these two values we can say

Fst=(Ht-Hs)/Ht = (0.3432-0.324)/0.3432=0.002331

BUT WHAT if there are four populations
Please help to explain

2007-08-05 16:39:21 · 1 answers · asked by Anonymous

I heard a theory not too long ago that humans are slowly losing their pinky finger. I'm just curious to know if anyone has heard anything scientific on this subject; links would be appreciated.

2007-08-05 16:21:56 · 10 answers · asked by Justin H 7

2007-08-05 16:03:51 · 4 answers · asked by My W 1

It's related to Sequencing and assembly

2007-08-05 15:51:07 · 1 answers · asked by Anonymous

Our DNA and the DNA of all other living organisms is in the form of a code or language, is it not? Do languages spontaneously develop, or do they always have intent and an idea to communicate from some source behind them?

To understand the entire question and its complexity, please see

http://cosmicfingerprints.com/ifyoucanreadthis.htm

This in not religious spam, it a scientific look at information systems theory as relates to pattern vs. design in language. It is a lot to read, so I broke it down in my question, but it is well worth reading for anyone interested in evolution, from any viewpoint.

Please, I'm not looking for dogmatic answers of any persuasion, but a thoughtful response to a challenging question.

2007-08-05 15:46:06 · 5 answers · asked by MBC 4

and how long to they last? Please try to be specific and list more than one flower.

2007-08-05 15:41:36 · 2 answers · asked by Irrelavant 3

2007-08-05 15:41:27 · 6 answers · asked by Jessica O 1

the choices include beaker and graduated cylinder. which one is the right one?

2007-08-05 15:29:33 · 4 answers · asked by Anonymous

Ok, I get that chickens don't have a chick with every egg, but how does a chicken get the egg ferilized by the chicken? I don't get the process.

2007-08-05 13:31:31 · 4 answers · asked by tammy p 5

1) Top scientists are currently debating whether Creationism or Evolution is the correct explanation for life on earth..

2) Top scientists are currently debating about whether Global Warming is real or not.

3) It's a basic principle of science that nothing can be considered to be true unless it can predict the future.

4) In matters of life or death, government should not act until everyone agrees.

5) Stem cell research increases the risk of cloning.

2007-08-05 12:37:48 · 4 answers · asked by Anonymous

2007-08-05 10:56:55 · 2 answers · asked by c0l0mbianchika11 1

My friend needs help identifying this bug: http://img520.imageshack.us/my.php?image=n73480127936833035ei4.jpg

She found it in Maryland and said that it is actually pretty small. I thought that it may be a leaf hopper but I wasn't able to find a picture of one with similar coloring.

2007-08-05 09:16:57 · 3 answers · asked by Anonymous

2007-08-05 05:54:47 · 9 answers · asked by Joha 2

2007-08-05 05:07:18 · 30 answers · asked by summerbabe50 1

If dogs communicate through barking sound, when humans make these barking noises towards dogs, is it possible that we are actually saying words to these dogs and is that why they look in sometimes a curious way, and sometimes they turn very hostile when some barking sounds are made???



Just want to know if it is possible and can someone elaborate

2007-08-05 02:48:40 · 4 answers · asked by rizz 1

I'm not thinking of a normal habitat that might occur in nature, but rather a bio-engineered habitat. It seems to me that one actually could evolve a habitat with a mixture of microorganisms that are evolved to be responsive to certain very specific fish in certain very specific ways - ways which may enable a fish not normally accustomed to one type of water to handle it at least at a tolerable level.

There's not necessarily an ultimate "purpose" for such a scenario, I'm just curious if we currently have the knowledge that would be required to produce such a thing. It would make for some interesting "novelty aquatic displays", I'd think.

2007-08-04 20:46:08 · 6 answers · asked by uncleclover 5

a sea form of a cow is a manatee
a sea horse is a sea form of a real horse
an otter is a seacat
u know what a sea lion is!!!
so what is the sea form of us???

dolphins or what???

2007-08-04 20:17:54 · 13 answers · asked by westafrocherokee 1

Is The Air We breath now the same air that has been around since our ancestors?

2007-08-04 18:52:12 · 7 answers · asked by Vanessa B 1

source please!!!!!!!!!

2007-08-04 18:48:05 · 4 answers · asked by ♫♪ Ĩйѕǿмйїά¢ 4 Ĝязεй Đάў♪♫ 3

For science fair, I'm considering doing a project with resistant bacteria. Basically, I would grow bacteria, then expose it to hand sanitizer, rubbing alchohol, or anti-bacterial soap. (Woo-hoo, IV) Whatever is left, I would reproduce and expose it again and again, to see how long it takes the bacteria to become resistant. (Woo-hoo, DV) There's just one problem. What would I do with the resistant bacteria when the experiment is done? How do I kill it off? Any biologists in here have any ideas?

2007-08-04 18:38:56 · 7 answers · asked by andrea_bocelli_fan1 3

Hardy-Weinberg equilibrium in trisomics: If the frequencies of the F and S alleles at an electophoretic locus situated on chromosome 21 in humans are 0.6 and 0.4, what are the Hardy-Weinberg equilibrium genotype frequencies in a population of Down’s Syndrome sufferers (they have three doses of chromosome 21)?


Random mating: The three alleles at the human ABO blood group have frequencies of about 0.3 A, 0.1 B and 0.6 0 in Caucasians.What is the expected frequency of AA x 00 matings?

2007-08-04 16:27:30 · 1 answers · asked by samantha jacqlynlsy 2

2007-08-04 15:34:40 · 1 answers · asked by www_nikhil 1

All the methods I have found are too deep-- I need a simple explanation. :) Please and thank you.

2007-08-04 13:54:51 · 1 answers · asked by topsyturveey 1

In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external environment? The interior is:

a. Negatively charged and contains more sodium
b. positively charged and contain less sodium
c. positively charged and contains more sodium
d. negatively charged and contains less sodium

Please explain why, thanks....

2007-08-04 12:03:18 · 3 answers · asked by Anonymous

I know evolution doesn't have a purpose, but when we observe complex mechanisms we wonder about their biological significance...
I understand the importance of finding beauty in people (selecting fit partners, other sociologic things), but what would be the advantage of liking to watch certain landscapes, the sunset, etc?

Do you think this is a subproduct of other selected process (for instance, it is important to be able to classify people as beautiful or not, so when that ability it comes up it is selected, but it isn't restricted to people only) or that it is important per se?

I don't know if I made myself clear... This is one of the things that comes to my mind once in a while, so I'dd like to hear some other opinions. :)

2007-08-04 11:22:56 · 11 answers · asked by Sofia 2

2007-08-04 10:58:14 · 3 answers · asked by irvin p 1

How can you prove to someone that soul exists?
A person says it biological, scientist can take whats in a male and female and then they can create a person with soul.
- Besicaly they take female egg and male sperm, and they can put those in a somekind of tube and a child is born with a soul.

2007-08-04 08:15:53 · 12 answers · asked by Salaama 2

2007-08-04 07:53:47 · 7 answers · asked by Anonymous

I need to know for a science fair project. Something that grows well in under a month. Ideally, it should produce flowers and not require too much care. If not, what other plants can I use?

2007-08-04 07:22:55 · 5 answers · asked by slam_92 3