Biology - June 2007

_____is arecessive genetic disorder in which the blood is slow to clot or does not clot at all.
A.sickle cell anemia
B. hemphilia
C.anemia
D.down syndrome

2007-06-24 19:45:46 · 10 answers · asked by Anonymous

According to evolve theory- the world sprays out mutants and the process of natural selection keeps the best suited.

But everything goes in cycles- heats up--cools down--lots of vegatation--lots of land. These are long cycles--over thousands of years the earth heats up..solar radiation increases... but the selection process is done in the short span of a man's lifetime-- say--30 years.

How does nature know how to select the right specie in a 20 year period that will be the best selection a hundred thousand years later?

Reversability says the fluctuations over a man's lifespan are vastly greater than the gradient of nature's progress. So hairless men die on a very cold day but the survivors die on very hot days-- that's reversability--there's is no arrow of evolution to point the way to natural selection

Face it- many young blacks die from a bullet-what are the odds nature intends to evolve black males into an armor-plated thing to survive bullets?

2007-06-24 17:11:34 · 7 answers · asked by Anonymous

2007-06-24 15:16:36 · 5 answers · asked by marcos g 1

if the person wasn't wearing a seat belt would they survive? Keep in a mind this is the largest standard luxury sedan ever produced

2007-06-24 14:10:43 · 4 answers · asked by Anonymous

2007-06-24 13:38:07 · 8 answers · asked by mankneejr 4

I understand how the daughter cells have half of the genetic info of the parent, but if there are 4 daughter cells, how can they all have half? To make an analogy, how is it possible, to go from 1 basket with two eggs to 4 baskets with half, or one egg. HELP. I have a provinial tomorrow and I need to understand.

2007-06-24 13:36:08 · 6 answers · asked by Anonymous

I'm serious. We started in Africa as humans. We were dark skinned, which was an advantage because of the sunlight and heat. Some humans moved north into Europe. These people became white. Why? Just because there is less sun is not a reason for genetic change. There must have been a benefit to lighter skin in that region. What was it? In other words; if the darker skin color was no longer necessary, why did it go away instead of becoming vestigial?

2007-06-24 12:59:54 · 34 answers · asked by Carolyn S 1

A coevolution

B stabilizing selection

C. Directional selection

D. Resource positioning

2007-06-24 11:58:55 · 19 answers · asked by whisper2ya 2

what percentage of the air we breathe is actually oxygen? When we exhale, what is that? Why when we give artificial respiration how does that benefit the recipient--isn't that carbon dioxide we're exhaling into their lungs?

2007-06-24 11:53:04 · 10 answers · asked by beebeep 2

Like when you're scared or excited, your heart starts beating faster.

2007-06-24 11:49:36 · 9 answers · asked by Kyra 1

2007-06-24 11:24:20 · 12 answers · asked by Sir Doc 2

Bonobos:
laid back.
more sexually driven.
Alpha male and Alpha females in troop.
very peaceful.

or


Chimpanzees:
Alpha male in troop, no alpha female.
somewhat obnoxious.
Males dominate the all the females in the troop.
Only species other than humans to travel significant distances to perform a lethal raids and kidnapping.

What do you think?

2007-06-24 10:59:11 · 7 answers · asked by Anonymous

They are a primary food for trout in cold-water streams!

Clue: This mayfly has a white body, and black wings.

Also, what other different names are there for this particular mayfly?

2007-06-24 10:53:29 · 1 answers · asked by Anonymous

Please tell me why....

2007-06-24 10:38:03 · 6 answers · asked by Anonymous

Do you think a virus that creates zombies is within the possibilities of science? Explain.

2007-06-24 09:30:49 · 9 answers · asked by Paradox 3

Simple organic molecules, such as amino acids and nucleotides:

a. could not have developed in early Earth environments because of the oxygen in the atmosphere.
b. can only be made by living organisms
c. can be synthesized abiotically from simple inorganic molecules.
d. are not necessary for life.

thank you!

2007-06-24 09:02:36 · 3 answers · asked by theasiannej 1

2007-06-24 08:52:55 · 7 answers · asked by Dark Angel 1

2007-06-24 08:48:47 · 13 answers · asked by Anonymous

My 10 year old daughter wants to know!

2007-06-24 08:27:01 · 12 answers · asked by kerri_bliss 2

2007-06-24 08:14:00 · 8 answers · asked by Taseri 2

Alright...I'm trying to help one of my friends understand evolution. They need to understand it and believe it happens because it is crucial to what they are studying in college. So how could you explain these things to someone who is very skeptical of evolution.....how do we know that the transitional fossils we have found are not just extint species? Whats the proof that we evolved from them? So we have a lot of similar traits of the animals around us, but that doesn't mean we all came from a common ancestor. If we were created by the same intelligent being, don't you think he would create us similar? And yes, there is lots of information out there about how we evolved, from genetic mutations and stuff, but we have never witnessed it happening, so how do we know that's what really happens? I have failed at giving a convincing answer to these questions, so any help would be greatly appreciated!! Thank you!!

2007-06-24 08:13:32 · 8 answers · asked by mandy 3

2007-06-24 05:54:44 · 2 answers · asked by Anonymous

people say to swallow air but what? how can u make your air go to your stomach not your lungs??

helppp

2007-06-24 05:42:50 · 4 answers · asked by Anonymous

My mom has red hair, blue eyes and lot and lots of freckles.

My dad has brownish/red hair, green eyes and olive skin.

I have dark brown eyes, pale blonde hair and pale skin.

Why dont I look like either of them?

I know for a fact there my real parents.

2007-06-24 05:34:03 · 12 answers · asked by Anonymous

2007-06-24 05:30:07 · 2 answers · asked by ashfaq 2

waht is density of water

2007-06-24 04:57:52 · 2 answers · asked by shiavanand k 1

examine the following in your comparison:

cell type, cell location, starting materials or reactants, products, energy source required, purpose, eneregy absorbed/ released, chemical equations, types of cellular respiration.

2007-06-24 04:12:11 · 2 answers · asked by mrchrister93023 1

2007-06-24 02:42:37 · 10 answers · asked by Anonymous

2007-06-24 02:33:03 · 2 answers · asked by Anonymous

2007-06-24 01:58:22 · 2 answers · asked by kim 1