Biology - September 2007

When using a cladistic approach to systematics, which of the following is considered most important for classification?

A. shared primitive characters

B. analogous primitive characters

C. shared derived characters

D. the degree of evolutionary divergence
E. overall phenotypic similarity

I'm not sure if this should be A or C. I am leaning towards C, because these characters are unique to a particular clade and would seem to be better for classifying.

2007-09-23 12:24:29 · 1 answers · asked by Anonymous

2007-09-23 10:27:51 · 18 answers · asked by student 2

2007-09-23 10:26:06 · 2 answers · asked by damigurl05 1

2007-09-23 09:25:00 · 2 answers · asked by damigurl05 1

2007-09-23 09:04:13 · 6 answers · asked by damigurl05 1

Do you agree or disagree. Why or why not?

2007-09-23 08:33:47 · 6 answers · asked by bumblebee 4

2007-09-23 08:10:58 · 6 answers · asked by lexie 4 1

2007-09-23 08:00:40 · 2 answers · asked by damigurl05 1

I heard many years ago that this is not possible...I am blue eyed as is my brother...yet my mother is brown eyed and my father hazel.

2007-09-23 05:22:29 · 10 answers · asked by Anonymous

It may be like FM...

Or

F... M...

I don't know! Help? =] xx

2007-09-23 04:25:48 · 5 answers · asked by Anonymous

2007-09-23 02:52:23 · 2 answers · asked by Anonymous

One evolutionist complained that I called the evolutionists the evolutionists. http://answers.yahoo.com/question/index?qid=20070923053253AA69uZn&r=w
As of now, he received two thumb up. (The thumb down is from me.) Is this the general opinion? Is it that evolution is not a field of study as cryptography or other specialized fields of study are?

We call those who study physics the physicists. We call those
who study mathematics, the mathematicians. We call those who study computer science, the computer scientists. We call those who study cryptography (part of mathematics), the cryptographers. So, how should we call those who study evolution?

2007-09-23 02:18:46 · 6 answers · asked by My account has been compromised 2

"1 - This is the evolutionary formula for making a universe:

Nothing + nothing = two elements + time = 92 natural elements + time = all physical laws and a completely structured universe of galaxies, systems, stars, planets, and moons orbiting in perfect balance and order.

2 - This is the evolutionary formula for making life:

Dirt + water + time = living creatures.

Evolutionists theorize that the above two formulas can enable everything about us to make itself—with the exception of man-made things, such as automobiles or buildings. Complicated things, such as wooden boxes with nails in them, require thought, intelligence, and careful workmanship. But everything else about us in nature, such as hummingbirds and the human eye, is declared to be the result of accidental mishaps, random confusion, and time. You will not even need raw materials to begin with. They make themselves too."
(" "Taken from "The Evolution Cruncher")

How did all this nonsense get started?

2007-09-23 00:57:14 · 9 answers · asked by John in AZ 4

2007-09-22 21:39:06 · 12 answers · asked by Anonymous

2007-09-22 18:49:44 · 7 answers · asked by Akilesh - Internet Undertaker 7

2007-09-22 18:31:55 · 3 answers · asked by Anonymous

I need 5 herbivores that live in the temperate forest. 6 carniver out of which 1 can be a scavanger and one can be an omnivore. and I need 4 decomposers. please help me!!!1

2007-09-22 17:10:44 · 3 answers · asked by John 1

will it benefit the chicken poultry? because if we assume that the certain gender is male and the chick will most likely be capable of reproducing will it effect its offspring and give side effects on people that will eat it or its offspring?

2007-09-22 16:38:03 · 3 answers · asked by i play guitar!... 1

help!can someone explain to me?
and what do you think are the most important characteristic of life?and what are the lesser?and why?
gosh,,this living things confuse me so much...

2007-09-22 16:03:39 · 12 answers · asked by Anonymous

Im doing a report on poisonous plants in florida and how long does it take if you swallowed a rosary pea to kill you?

2007-09-22 15:49:22 · 2 answers · asked by Anonymous

i tred to search any example of symbiotic in tundra, but can't find it, i've tried yahoo and google and dk any other website i can try on. Can anyone give me some examples, plzzz

2007-09-22 12:18:49 · 2 answers · asked by snowday 3

what is an organic compound called that is used to store energy and forms important parts of biological membranes?

2007-09-22 12:06:00 · 2 answers · asked by Anonymous

Scientists believe we all came from the same origin in Africa millions of years ago based on DNA traces. Do you think it is possible that similar species (i.e. similar DNAs) may have developed in difference places on earth? For example: Do you believe butterflies or ants around the world were all originated from one butterfly or ant somewhere?

2007-09-22 11:29:24 · 12 answers · asked by Phil 3

I'm doing a cell project for biology and I need some thing in california that I can say would be like a cell wall. I thought about the border but it's not really a wall, Is It?

2007-09-22 11:24:49 · 4 answers · asked by locachicablanca 1

which organic compound would you most likely need more of: carbohydrate, nucleic acid, lipid, protein

a: dry and brittle hair: my guess protein
b: tired all the time: carbs? proteins?
c: fingernails break and are soft: proteins?
d: cold easily: protein?
e: body growing rapidly: don't know

there can be more than one answer for each of the situations
please tell me if im right thanks

2007-09-22 10:47:14 · 2 answers · asked by Anonymous 2

I know that the half life of Carbon-14 is 5730 years,
but what would be the age of a fossil containing 1/16 the amount of Carbon-14?
Im puzzled...
any help would be appreciated

2007-09-22 10:42:47 · 1 answers · asked by Anonymous

Where in a molecule is energy stored?
How does your body get energy out of the food you eat? (Is it basically like your body breaks down the food into simpler molecules that it can use? I don't know of it that's right but my guess)
Why does living organisms release energy gradually?
Is it true that enzymes must be constantly synthesized by the body since they are used up in a reaction? (I thought that enzymes don't react so you don't need more right? I'm not sure. by the way what does synthesize mean?)
where in a cell would you look for dna?
what bases do dna and rna have in common
is dna or rna longer


thanks

2007-09-22 10:40:55 · 1 answers · asked by Anonymous 2

2007-09-22 10:11:14 · 4 answers · asked by amcheung10 2

2007-09-22 09:11:55 · 19 answers · asked by ted 1

and also live on land, because other amphibians have to come up for air regularly?

2007-09-22 08:59:45 · 1 answers · asked by Anonymous