Biology - May 2007

a. directional.

b. disruptive.

c. stabilizing.

d. absent.

2007-05-12 06:09:35 · 4 answers · asked by Anonymous

a. A strain of houseflies resistant to insecticides emerges.

b. Squirrels separated by a river are found to be unable to interbreed.

c. A son is born with a portion of his right index finger missing,
the same portion cut off from his father's hand in an accident.

d. A strain of houseflies resistant to insecticides emerges; and Squirrels separated by a river are found to be unable to interbreed.

e. A strain of houseflies resistant to insecticides emerges; Squirrels separated by a river are found to be unable to
interbreed; and A son is born with a portion of his right index
finger missing, the same portion cut off from his father's hand in an accident.

2007-05-12 06:08:39 · 2 answers · asked by Anonymous

If you sampled the genetic characteristics of a large population and found that of the 50 loci analyzed there was very little if any variation, the most likely explanation would be that

a. a uniform environment selected for these alleles.

b. there has been a lack of migration and the genetic equilibrium stabilized the population.

c. strong selection pressures eliminated alternative alleles.

d. a bottleneck effect may have occurred in the past to reduce the variability in the population.

e. a combination of low mutation rates and differential sexual
selection produced these results.

2007-05-12 06:02:50 · 3 answers · asked by Anonymous

2007-05-12 04:41:35 · 5 answers · asked by Anonymous

http://www.sciencedaily.com/releases/2002/10/021018080014.htm

2007-05-12 03:44:00 · 10 answers · asked by Alex 2

Good camouflage - harder to find, long legs - harder to catch, evolution can be seen to work at the macro level, but what about the small stuff? Does every step by step incremental change towards some revised form necessarily evidence the theory, or does the theory need to be invoked in order to support its own underpinings (bootstraps?). The theory says every step towards a higher-evolved creature is driven by the natural selection driver and no other agent of change. I can't buy it because it cannot be demonstrated and it certainly seems unlikely - no more than a hypothetical crutch to help support the theory. The theory of evolution may be valid, I certainly accept the general principal, but I strongly suspect there are many strains of ongoing change in an evolving lifeform that, contrary to theory, cannot be demonstrated to provide any obvious benefit at the time they are adopted. They are assumed to do so because the theory says they must. Any thoughts/evidence on this?

2007-05-12 03:08:25 · 15 answers · asked by Endor 3

2007-05-11 21:45:16 · 6 answers · asked by Anonymous

2007-05-11 18:15:27 · 9 answers · asked by Dua 1

2007-05-11 18:01:34 · 4 answers · asked by cpc26ca 1

I had a question about this product and someone answer back that it kills the cells inside our own body and if that is true then y doesn't kill our skin cells that are on the outside of the body a cell is a cell right or wrong ... huuuummmmmmmmm!!!!!!!! courious George is still on the stand by .. even thoe it kills mold and its a good cleaning tools and a good aid .. This is good we need to develop something here

2007-05-11 16:31:26 · 4 answers · asked by Anonymous

Ok, Ok.

It's Friday night and I just did a DNA extraction in my own kitchen.

I'm a true NERD!

I dissolved some sea salt to about saturation in a glass.

I dry brushed my teeth and tongue and cheeks.

I took a small mouthful of the salt water, and spit it into another glass.

I mixed two squirts of soap and some water from the faucet.
I did a 50% mix of soap water with the cell/salt mix. I swirled for a couple of minutes. I added 3 times alcohol to the soap/salt mix and gently swirled.

I see what I think is DNA (looks like a big wad of phlegm).

Is that DNA?

I'm used to commercial kits where cell debris is spun out as a pellet.

Did I do this right?

Thanks for laughing with me!

2007-05-11 16:00:00 · 8 answers · asked by dumbdumb 4

2007-05-11 15:10:39 · 10 answers · asked by Anonymous

2007-05-11 12:58:14 · 6 answers · asked by TAns 2

Absolutely not. More like 0.3%...

2007-05-11 12:32:10 · 8 answers · asked by Anonymous

I have a Chi Square table I have to complete for our fruit fly experiment but I have no clue how to do it. It has rows labeled observed, expected, deviation, deviation squared, and deviation squared divided by expected. It has columns labeled vestigial male, vestigial female, wild male, and wild female. The results from the experiment were no vestigial flies and 73wild male and 67 wild female. My hypothesis was that there wouldn’t be any vestigial. How do you find expected??? THANKS!!!

2007-05-11 11:11:45 · 2 answers · asked by Anonymous

2007-05-11 11:09:28 · 30 answers · asked by alaina 1

I live in Californina and would prefer to stay on the west coast. I have no restrictions in cost, location, or public/private. I would prefer to go to a smaller school ( less that 5,000 students). I had one on my mind. But things didnt work out there, so any alternatives would be greatly appreciated.

2007-05-11 10:57:04 · 6 answers · asked by Anonymous

2007-05-11 09:39:29 · 19 answers · asked by Anonymous

can anyone name ten body parts with three letters in each of them. no shortened words or swear words

2007-05-11 07:22:12 · 47 answers · asked by Anonymous

a. Buffon

b. Lyell

c. Wallace

d. Cuvier

e. Darwin

2007-05-11 06:41:20 · 6 answers · asked by Anonymous

2007-05-11 06:14:59 · 1 answers · asked by taif t 1

I do hope so.

We get this sort of question on the Religion and Spirituality page all the time. I'd be thankful if a few of you could help clear up this young ladies misconceptions.

Her Question:

How can folks who adhere to Evolution or the *Big Bang* Theory?
Explain why we have 2 sexes?
Why didn't evolution create one species?

How can you dis-count the fact that GOD creator of heaven and Earth knew that it was going to take a male and female and the way he designed them, to pro-create the planet with human beings and animals of every species.

What is evolutions answer?

The link:

http://answers.yahoo.com/question/index;_ylt=AoNJyKx7hz5K61a.tJpEon3sy6IX?qid=20070511085210AARoSpy

2007-05-11 05:09:00 · 8 answers · asked by Herodotus 7

2007-05-11 05:03:08 · 18 answers · asked by Anonymous

I am planning on doing a double major in
Biology(B&MB) and Chemistry. Since there are overlapping isn't possible to minor like in Spanish? what's your opinion?

2007-05-11 03:54:56 · 3 answers · asked by avalentin911 2

2007-05-11 03:49:16 · 7 answers · asked by jackie j 2

As Swift said "big fleas have smaller fleas upon 'em", but I've never come across a theory considering the possibility that we are just a microscopic dot in some bigger being's world, and so on up a ladder. Have you?

2007-05-11 03:40:58 · 6 answers · asked by lakelounger 3

people say that we originated from monkeys but how come there are still apes around?

2007-05-11 03:07:38 · 17 answers · asked by conneely1234 1

I am doin a speech on cloning and i want to know if identical twins are clones (apperance wise)

Thank you in advance for the help!!!!

2007-05-11 00:43:52 · 9 answers · asked by Anonymous

I do..do u?

2007-05-11 00:13:08 · 8 answers · asked by Anonymous

, why isn't there any species that evolves to eliminate the gene that causes ageing? I mean, if merely to exist and to continue to exist is the sole purpose of every single living organism, then why die in the first place?

2007-05-10 21:47:36 · 9 answers · asked by Crystalline As Dew 2