Biology - December 2007

I understand that there are no fossil records covering certain periods so there is no physical proof of an evolutionary transition occuring. But over what period(s) is this? Is this missing period over thousand or millions of years. How significant is it. Do we go from looking like an ape to then suddenly appearing as a homosapien?

2007-12-22 03:41:22 · 9 answers · asked by purplepeace59 5

ANY INFO WOULD BE GOOD....

2007-12-22 03:32:20 · 1 answers · asked by Anonymous

If this is true then could please tell me why?
Thank you for your time..

2007-12-21 21:08:27 · 3 answers · asked by Fantail Flycatcher 3

what is it about that makes us cry? even after getting away from one, my eyes still sting. what causes it?

2007-12-21 20:55:52 · 11 answers · asked by pullthetrigger 6

2007-12-21 17:45:51 · 8 answers · asked by Anonymous

I just found that out, I wonder what could be the cause.

I know one way, some of our water isn't filtered properly and some of the birth control chemicals are in that water. The chemicals get there from the sewage. Women only use 10% of the substance, the the rest is released.

That can't be the only problem, infertility is happening all-over the world.

2007-12-21 17:27:50 · 10 answers · asked by Anonymous

How did Mendel's approach to answering scientific questions differ from that of his contemporaries?

2007-12-21 16:19:51 · 6 answers · asked by Anonymous

What is in the DNA of cousins that will cause their kids to have birth defects? Is this just an old wive's tale? I'm sorry I just don't understand how it works. I thought human beings all pretty much have the same DNA so what difference does it make whether you marry your cousin or someone who isn't related to you? Isn't DNA or genetic material all the same?

2007-12-21 16:06:06 · 12 answers · asked by Anonymous

2007-12-21 16:04:26 · 8 answers · asked by pochikutti 1

2007-12-21 15:12:16 · 3 answers · asked by Anonymous

Please help me.
Here is a code I must translate. Please tell me how to

TAC TTA CCG ACG

What is the tRNA code?
what is the mRNA code?

2007-12-21 13:59:09 · 8 answers · asked by Anonymous

Help appreciated.

2007-12-21 13:44:36 · 6 answers · asked by TheKingOfKnowledge 1

2007-12-21 11:14:23 · 11 answers · asked by Anonymous

2007-12-21 11:08:10 · 24 answers · asked by boatquayxklusiv 2

a. other scientists can replicate the experiment
b. the biologist included a control in the experiment
c the offspring are given a scientific name
d. research shows that other animals can be crossbred


is it b??????

2007-12-21 09:29:08 · 6 answers · asked by Soprano 2

we watched a video in biology to day and there was a big monkey screaming. what king of monkey is it?

2007-12-21 08:30:11 · 3 answers · asked by skylar 2

2007-12-21 08:15:26 · 6 answers · asked by agwala_mms2005 1

...In my last q the blogger "Emucompboy..writes in response "Most mutations are not harmful but SILENT..THIS IS A BOGUS RESPONSE......However note - Encycopedia Americana "The FACT that most mutations are DAMAGING to the ORGAMSM - (1977 VOL10 PG 742)...From Dr Carl Sagan - Most "mutations are HARMFUL (Cosmos 1980 PG 27).....Dr. Peo Koller - The greatest proportion of mutations are DELETERIOUS to the individual who carries the MUTATED GENE it was found in "experiments" that for every successful or useful mutation there are many THOUSANDS which are harmful...and from .. G Ledyard Stebbins observed "After a greater or lesser number of generations the mutants are ELIMINATED. They could NOT compete because they were not IMPROVED but were DEGENERATE and at a DISAVANTAGE.!....And from John Moore (Again) ..Any evolutionary process involving mutations is an utter MYTH......Mr. Emucompboy your're beginning to sound like OJ Simpson.."Just give me more time, I'll find the killers)!" keep looking..

2007-12-21 07:43:42 · 9 answers · asked by Archie P 1

like if ur husband has freckles right and you dont what are the chances of ur kid having them?..

2007-12-21 07:43:10 · 6 answers · asked by Anonymous

If not, any vertebrates? Any insects? Anything with more than just a few cells?

2007-12-21 06:59:37 · 9 answers · asked by Al M 1

Does gum get stuck in your digestive system or does it just break up like normal food?

2007-12-21 06:26:23 · 12 answers · asked by null 4

arent the most dominant species always meat eaters?

2007-12-21 06:01:36 · 33 answers · asked by Ramble 3

2007-12-21 05:48:50 · 12 answers · asked by Anonymous

There has been discussion in the scientific world of being able to change the characteristics and traits of humans. Talk of being able to make us see infrared or echo-locate by taking genes from certain other organisms is very interesting. Also interesting is the prospect of parents being able to pick and choose the characteristics of their offspring (e.g. blond hair, musically talented, tall...).

What are some advantages and disadvantages to that? How would it change society?

Give references to the movie GATTACA if possible.


Answer this question in 20 minutes and I'll give you best answer ASAP.

2007-12-21 05:30:09 · 3 answers · asked by Anonymous

true
false

2007-12-21 05:03:34 · 7 answers · asked by Anonymous

What has confounded scientist is the FACT that the massive fossil record revels NO TRANSISTIONAL LINKS between one MAJOR kind of living thing and another. So what the fossil record says is just the OPPOSITE of what was expected.....Botanist Heribert Nilsson says "The LACK of transistional series CANNOT be explained as due to the scarcity of material. The deficiencies are real they will NEVER be filled"....Zoologist Harold Coffin adds "If progressive EVOLUTION from simple to complex is correct, the ancestors of full-blown living creatures in the Cambrin should be found-but they have NOT BEEN FOUND and scientist admit there is little prospect of their EVER BEING FOUND".. Evolutionist Edward Samuel says"No biogeographical distribution or of the fossil record can direct support evolution".....Dr Carl Sagan says - The fossil record evidence could be CONSISTENT with the IDEA of a GREAT DESIGNER.......(Now I ask all of you WHICH REQUIRE MORE FAITH....EVOLUTION OR CREATION ??

2007-12-21 05:02:03 · 19 answers · asked by Archie P 1

The following is from Livescience.com concerning the myth about chickens living without a head:

"True, and not just for a few minutes. A chicken can stagger around without its noggin because the brain stem, often left partially intact after a beheading, controls most of its reflexes. One robust fellow lived a full eighteen months. Likely he was a real birdbrain, however. "

http://www.livescience.com/bestimg/index.php?url=myths_chicken_head_03.jpg&cat=myths

How is this even possible? The way this is stated, a chicken's body lived for 18 months. Wouldn't the body starve to death?

2007-12-21 03:35:39 · 12 answers · asked by Scott 2

what is the recommended polyacrylamide gel percentage for protein size 15kD and 34kD?
do any one have a website to recommened?
previously i tried using 7.5% gel, is that really recommended or am i to use higher percentage?
thank you in advanced. : )

2007-12-21 03:03:49 · 4 answers · asked by Anonymous

A particular base triplet in the coding strand of DNA is TCA. What would be the triplet in the complementary strand of DNA?

A. AGT

B. TCA

C. AGU

D. GAT

E. CAT

The problem associated with replication of DNA proceeding in the 3’ > 5’ direction only, is solved by the use of:

A.Complimentary base pairing

B.Replication forks

C.The enzyme that unwinds the DNA, helicase

D.Okazaki fragments

E. The semiconservative replication of the molecule


What type of inheritance pattern is exhibited in a genetic cross if the phenotypes of two unique homozygous parents (AA and aa) are different from the phenotype of a heterozygous (Aa) offspring?

A. Pleiotropy

B.Epistasis

C. incomplete dominance

D. multiple alleles

E. selinkage

2007-12-21 02:53:06 · 3 answers · asked by Anonymous

In humans, red-green colorblindness is a sex-linked recessive trait. If man is colorblind, which of the following must be true?


A.His father is colorblind.

B.His mother is colorblind.

C. Both his parents are colorblind.

D. His father carries at least one colorblind allele.

E. His mother carries at least one colorblind allele.

2007-12-21 02:35:39 · 3 answers · asked by Anonymous