Biology - December 2007

. J.B.S. Haldane (a famous population geneticists) once remarked that he’d be willing to lay down his life to save two brothers or eight cousins. Explain what he meant. Based on the theory of kin selection and reciprocal altruism, predict the conditions under which people are expected to be nice to one another.

2007-12-04 06:09:17 · 2 answers · asked by Anonymous

Compare and contrast the biomes found at increasing elevation on a mountain with the biomes found at increasing latitude.

2007-12-04 06:04:01 · 2 answers · asked by Anonymous

Organs or organisms structurally diverse though related by ancestry

a.meiosis b. allopatric speciation c.genetic drift d. natural selection e. adaptive radiation f. disruptive selection g.mitosis h. sympatric speciation i.bottleneck effect j. mutaion k. convergent evolution l. stabilizing selection

2007-12-04 05:36:50 · 2 answers · asked by Anonymous

I need help from all you mathematicians and geneticists out there to make sure I get my calculations correct for a newsletter article. Here goes, one parent has dominant RR, the other recessive rr for trait #1, so the F1 generation all have Rr. Cross those and 1 in 4 (25%) of the the F2 will be recessive rr. With a second trait involved, say dominant AA and recessive aa, I believe the odds of an F2 being recessive rr-aa is 1 in 16. I think. Here's the tough part, with 14 traits involved, what would the odds be of getting a F2 recessive for all traits? Thanks!

2007-12-04 04:44:07 · 2 answers · asked by bikinkawboy 7

One acre of corn grown in Iowa with no fertilizer was compare with another acre of corn grown in California using a new experimental fertilizer. The total production of corn was measured for each field. What is wrong with this experimental design?

2007-12-04 03:40:04 · 7 answers · asked by Anonymous

2007-12-04 02:28:39 · 1 answers · asked by halfkidd 1

2007-12-03 23:14:46 · 14 answers · asked by jamie 1

It is a tiny bacterium or gigantic banyan tree, it is an insignificant ameoba or a mighty man their bodiesare composed of protoplasm

2007-12-03 21:08:48 · 10 answers · asked by Anonymous

pleeeeez help, and tell me only facts!!!!!!!

2007-12-03 18:26:07 · 2 answers · asked by luminosity 2

Yea what ^ that said.

2007-12-03 16:46:38 · 1 answers · asked by Jey A 1

We have been studying this in school lately...
Your thoughts?

2007-12-03 15:51:58 · 4 answers · asked by Anonymous

i need to kind a reason why a lot of people don't have six fingers. What happen? did all people with six fingers die?

2007-12-03 13:52:49 · 4 answers · asked by GeeksAreFreaks 3

2007-12-03 12:38:06 · 1 answers · asked by dhivvya r 1

I would have thought it was best to get it out of your system asap before it gets into bloodstream

2007-12-03 12:33:03 · 8 answers · asked by Jax Back 3

READ YOUR BOOKS!

2007-12-03 11:35:35 · 11 answers · asked by rtforkids 4

In peas, round (R) seeds are dominant over wrinkled (r) and tall (T) stems are dominant over dwarf (t). All tall plant with round seeds was bred with a tall plant with wrinkled seeds and the following offspring were produced: 150 tall round and 50 dwarf round. What are the genotypes of the parents?

2007-12-03 11:28:36 · 4 answers · asked by Vanessa N 1

2007-12-03 11:08:24 · 1 answers · asked by geni 1

Co2 concentration
Light quantity
Temperature
Water

2007-12-03 10:42:13 · 2 answers · asked by V 1

Pollution has a significant impact on the respiratory health of humans, how might it impact the respiratory health of organisms with different respiratory organs?

A comparison of the nutritional information for each sandwich. Suggested format: show the nutritional information in chart form followed by comments on the similarities and differences.

As part of a healthy diet, which sandwich would you choose and why?

What are the potential health risks of eating fast food in a regular basis?

2007-12-03 10:04:57 · 2 answers · asked by Linda k 1

2007-12-03 10:04:37 · 1 answers · asked by regina3310 1

The fossilized duckbilled hadrosaur is so well preserved that scientists have been able to calculate its muscle mass and learn that it was more muscular than thought, probably giving it the ability to outrun predators such as T. rex.

This is pure conjecture and it is being presented as fact. I dont believe anything they say. Why should I?

2007-12-03 10:01:48 · 3 answers · asked by Anonymous

2007-12-03 09:30:56 · 9 answers · asked by Anonymous

Please help me. I would be so thankful of you.

thanks! (big time)

2007-12-03 09:29:26 · 2 answers · asked by dsquared1992 2

2007-12-03 09:29:06 · 1 answers · asked by Anonymous

its for a report

2007-12-03 09:25:12 · 2 answers · asked by Wiigamer123 1

Wondering...?

And would i need to know some chemistry for AP biology, cause my teacher wants me to take it as a sophmore.

Currently in honors biology with an A, but did struggle with biochemistry.

2007-12-03 09:21:34 · 8 answers · asked by Anonymous

http://img248.imageshack.us/img248/6094/chyeehjc6.jpg

Referring to the picture, answer the question.

Name the variable and the experimental group. Defend your response.

2007-12-03 09:17:50 · 3 answers · asked by mz. * 1

Left middle or right?

2007-12-03 06:57:05 · 8 answers · asked by Anonymous

Hi,

Ovulation: A process called ovulation releases the secondary oocyte (egg cell) from the surface of the ovary surrounded by layers of follicular cells.

If this secondary oocyte (egg cell) is not _____________ shortly after its release, it will degenerate.

Any help would be much appreciated!!

2007-12-03 06:16:12 · 6 answers · asked by ray 2

okay I just got my exam back and finals are around the corner and I missed the question on Ohm's law and only got half credit for the essay. The question was..Which of the following is correct according to Ohm's Law? A. I=R/V
B. Current is directly proportional to the resistance
C. R=V=1
D. The more intense the stimulus the more voltage changes.
Those are the answers the formula for Ohm's law is I=V/R
I put b. and got it wrong because Current is only inversely proportional to the resistance where current is directly proportional to voltage.
Anyways I believe I was told A. was the correct answer, how can this be? It makes no sense whatsoever. I was hoping someone could explain this to me or atleast explain why the other three are wrong mainly D.

I put this under biology because I wasn't sure it is for my Physiology class.

2007-12-03 05:06:57 · 5 answers · asked by littlemisscontroverse 6