Biology - April 2007

I'm referring to all those millions years of life on earth that have passed ... and it just makes u wonder how come no other species evolved not even by far to our level of intelligence ... (why only us?)


PS : NO religious "GOD made us" stuff ... just a pure scientific answer ... thx

2007-04-06 03:03:09 · 40 answers · asked by Anonymous

Same is the case with my eyes too. In the morning (around 9.30 am), dark chocolate brown (almost black), but in sunlight or artificial light, brown (the pupil is clearly visible as black, and the iris is brown with brown-black specs and a black halo around the brown iris). How and why do the eyes appear differently under different conditions and intensities of light? How is the real eye colour then determined?

2007-04-06 01:37:50 · 2 answers · asked by divya_narayan_88 1

It's amazing to me how many people think that they are poking holes in evolutionary theory by asking the same questions. For instance, if we evolved from monkeys, then why are there still monkeys around? Instead of asking a question like this, why not spend a few moments trying to research the answer? It might actually help you learn something, contrary to asking a question when you really aren't interested in an answer, already have a preconceived idea of the answer, or are unwilling to understand evolutionary theory a little better. Most people don't even seem to understand what a scientific theory even is. Evolution is the best, most accurate explanation we have for the variety we see in the living world, resulting from the research and experimentation of thousands of scientists for over a century. You can accept or reject the theory, but at least examine the evidence and then have an informed opinion. With an informed opinion, everyone will benefit regardless of your view.

2007-04-06 01:23:16 · 19 answers · asked by Niotulove 6

2007-04-06 00:52:47 · 5 answers · asked by Anonymous

Basically every thing is made of atoms. Next say molecules, again nonliving. All living entities are also made of these. Then how a nonliving building block makes living entity/ thing? What happens that things like us are made of nonlivings?

2007-04-06 00:44:05 · 13 answers · asked by Shani 1

2007-04-05 20:42:32 · 8 answers · asked by firefly 3

Darwin only talks about one gender (male or female) in his theory. If he was right, there would be only men or only women on this planet but not both of them!

2007-04-05 18:45:28 · 17 answers · asked by Anonymous

What is the probability that their second child will be able to roll his/her tongue and be normal (i.e. not have Tay Sach's)?

a. 9/16
b. 3/16
c. 3/8
d. 1/2
e. 3/4

thanks.

2007-04-05 18:39:58 · 2 answers · asked by Anonymous

have a child. What is the probability of their first child having attached earlobes?

a. 0%
b. 25%
c. 50%
d. 75%
e. 100%

please help. thanks.

2007-04-05 18:18:36 · 9 answers · asked by Anonymous

cannot roll her tongue and is heterozygous for colorblindness have a child. What is the probability that it will be able to roll his/her tongue have have normal vision?

a. 3/8
b. 3/16
c. 1/16
d. 1/4
e. 1/8

please help thanks.

2007-04-05 18:15:10 · 3 answers · asked by Anonymous

tongue. Jill can't roll her tongue. If Jack and Jill have a child together, what is the probability it will be able to roll his/her tongue?

a. 1.0 (100%)
b. 0.75
c. 0.5
d. 0.25
e. 0 (no chance it can roll tongue)

please help. thanks.

2007-04-05 18:11:51 · 6 answers · asked by Anonymous

Erect ears and barking are due to dominant alleles located on different chromosomes. If two dihybrids are crossed,

a. the most common phenotype is drooping ears and barking
b. all droopy-eared silent dogs are pure-breeding
c. the least common phenotype is drooping ears and barking
d. there will be no phenotypes or genotypes that resemble the original parents
e. there will be no offspring that resemble the F2 generation

please help. thanks.

2007-04-05 18:08:02 · 2 answers · asked by Anonymous

DNA

2007-04-05 17:26:44 · 6 answers · asked by Anonymous

i did a cross between GgWw x ggww G dominate gray body W normal wings b black body s small wings

Answer is: GgWw Ggww ggWw ggww

if i were asked what the phenotype is the correct answer would be ?
one gray with normal wings

one gray body with small wings

one black body with normal wings

one black body with small wings

2007-04-05 16:59:45 · 4 answers · asked by sambeker70 1

is bile made from dead red bloodcells?.If not ,do explain

2007-04-05 16:42:40 · 7 answers · asked by steam3 3

2007-04-05 16:35:15 · 4 answers · asked by Anonymous

here are the results of a cross between two flys

gray body , normal wings 236
black body, vestigial wings 253
gray body, vestigial wings 50
black body , normal wings 61

what conclusion can you draw about the chromosomal location of these genes ? what proces gives rises to the gray flys with vestigial wings and black flies with normal wings ?

2007-04-05 16:22:46 · 5 answers · asked by sambeker70 1

Problem
Mrs.Iben and Mrs.Iten shared a room at the hospital when they had their babies, and now they suspect their babies have been accidentally switched. The hospital performed blood tests that showed the following blood types: Mrs.Iben, AB; Mr.Iben, O; Mrs Iten, A; Mr Iten, A; Baby 1, A; Baby 2, O. Based on the blood types, can you determine which baby belongs to each set of parents?

Analize and Conclude
1. What are the possible Genotypes Mr. and Mrs. Iben?
2. What are the possible genotypes of children born to Mr. and Mrs. Iben
3. What are the possible genotypes of Mr. and Mrs.Iten
4. What are the possible genotypes of children born to Mr. and Mrs.Iten?
5. Which baby, baby 1 or baby 2, belongs to Mr. and Mrs. Iben? Which baby belongs to Mr and Mrs.Iten?

2007-04-05 15:40:44 · 2 answers · asked by Gondo 1

we did an experiment, and the solution that was isotonic to the outer solution did not maintain a constant weight.. the weight fluctuated a little here and there (just a little, though). a question i have to answer is:

Why did this bag not maintain a constant weight throughout the experiment? (Hint: molecules are in random motion)

2007-04-05 15:35:30 · 4 answers · asked by crazeberry11 1

2007-04-05 14:11:42 · 3 answers · asked by Anonymous

2007-04-05 13:39:35 · 8 answers · asked by sawari85 1

2007-04-05 09:06:58 · 112 answers · asked by Voight-Kampff 3

im just wondering if there is a difference between species' blood. Im almost positive there is, and so the real question is, WHAT is the difference?

2007-04-05 08:49:21 · 3 answers · asked by satirev 2

What is the simplest way to extract the DNA from a human, in a classroom???
Please help.........or give links to good websites!!
Thank you!

2007-04-05 08:48:06 · 15 answers · asked by Anonymous

2007-04-05 08:46:40 · 9 answers · asked by Natasha Lacey 1

do you know these?? if soo i would absolutly love it!!

Consumption of CO2 can be used as a measure of photosynthetic rate because carbon dioxide is...
a. consumed during the light reactions of photosynthesis
b. consumed during the dark reactions of photosynthesis
c. used to trap photons, the form of energy in sunlight
d. necessary for the production of ATP in oxidative phophorylation
e. produced when fermentation takes place


In animal develpment all of the following occur except...
a. cleavage, a succession of rapid cell divisions, occurs just after fertilization
b. the zygote develops polarity
c. the zygote eventually develops into a hollow ball of cells called a blastula
d. as cleavage continues a solid ball of cells called a morula is produced
e. all of the genes in the zygote are activated

(i think it might be E)

2007-04-05 08:35:05 · 3 answers · asked by Samarasy f 2

or is it a law?

2007-04-05 08:23:47 · 4 answers · asked by David D 1

Which of the following statements best supports the idea that certain cell organelles are evolutionarily derived from symbiotic prokaryotes living in host cells?...

a. The process of cellular respiration in certain prokaryotes is similar to that occuring in the mitochondria and chloroplasts.
b. Mitochondra and chloroplasts have DNA and proteins that are very similar to those in eukaryotes.
c. Mitochondria and eukaryotes have similar cell wall structures
d. Like prokaryotes, mitochondria have a double membrane
e. Mitochondria and chloroplasts have DNA and ribosomes that are similar to those of prokaryotes.



Which of the following cell organelles is not bounded by a membrane?
a. centrosome
b. golgi apparatus
c. cell nucleus
d. mitochondrion
e. peroxisome

2007-04-05 08:18:07 · 3 answers · asked by Samarasy f 2

thanks alot.. whoever knows the most or has the best explainations wins best answer.



In a testcross, which of the following must be true...
a. One of the individuals is homozygous dominant.
b.One of the individuals is homozygous recessive
c. Both individuals are heterozygous
d. both individuals are homozygous
e. both individuals have an unknown phenotype.




Diatoms are the primary producers in whch of the following ecosystems...
a. Marine
b. Desert
c. Temperature broadleaf forest
d. Chaparral
e. Tropical rain forest.



During which type of reaction is energy consumed?
a. Hydrolisis
b. Catabolic
c. oxidation-reduction
d. endergonic
e. exergonic

2007-04-05 08:14:03 · 3 answers · asked by Samarasy f 2

2007-04-05 08:06:09 · 1 answers · asked by Mary O 1