Biology - March 2007

2007-03-18 07:38:27 · 2 answers · asked by Ry H 1

Do we understand why the births of the sexes are so close to even numbers? Or are they? Do some races have an uneven amount? Does diet and disease play a role? Are things dictated by a higher spiritual entity or is there another explanation? Do we even know?

2007-03-18 07:35:56 · 5 answers · asked by chrisgallo 3

as i got some characterstics from my parents as usually all have,but how the siemens or ovam stores these information?whats the source or chemical for it?

2007-03-18 07:19:32 · 2 answers · asked by Anonymous

2007-03-18 07:08:36 · 3 answers · asked by varun s 1

2007-03-18 07:05:18 · 8 answers · asked by Anonymous

How many chromosomes are in a gamete and how many are in a somatic cell. Thank you. please help?

2007-03-18 06:57:10 · 2 answers · asked by Anonymous

I am doing a presentation on nutrition and i am confused on those two things. Help me out pleasse

2007-03-18 06:29:43 · 2 answers · asked by crank 2

5'
3'
Amino End
R-group
Carboxyl End

2007-03-18 06:26:31 · 2 answers · asked by Anonymous

2007-03-18 06:17:54 · 3 answers · asked by Anonymous

2007-03-18 06:17:18 · 5 answers · asked by Anonymous

2007-03-18 06:16:43 · 2 answers · asked by Anonymous

Please....I need a brief history of the discovery of DNA

2007-03-18 06:16:04 · 3 answers · asked by Anonymous

b. it limits the number of mutations that occur on a chromosome
c. it greatly reduces the number of different genetic combinations in the gametes
d. all possible combination of gametes have an equal chance of being produced

2. Mendel's classic dihybrid phenotypic ratio 9:3:3:1 would be expected when
a. both parents are homozygous dominant for both traits
b. one parent is heterozygous for both traits and the other parent is homozygous dominant for one trait and heterozygous for the other trait
c. both parents are heterozygous for both traits
d. both parents come from a highly inbred pedigree

3. If you observed a population of a particular organism and noticed 3 distinct phenotypes – such as tall, medium and short, what is most likely causing this?
a. tall alleles are likely incompletely dominant to recessive alleles
b. the recessive alleles are starting to mutate
c. tall allele are codominant to short alleles
d. there is no way to tell from the information provided

2007-03-18 06:08:55 · 1 answers · asked by Anonymous

b. genes that are located on the X chromosome
c. genes that are only carried in females
d. none of the above are correct

2. In pea plants yellow seeds are dominant to green seeds. Also, smooth seeds are dominant to wrinkled seeds. If a heterozygous yellow, heterozygous smooth seeded plant is crossed with a heterozygous yellow, wrinkled seeded plant, how many potential genotypes will be shown in the offspring of these 2 parents?
a. 2
b. 4
c. 6
d. no way to tell based on the information given

3. One of Mendel's importance concepts in explaining how traits are transmitted is the idea of independent assortment. What was Mendel illustrating with this concept?
a. genetic traits separate independently from each other in meiosis
b. during gamete formation, each cell separates from others in a random manner
c. recessive traits are not expressed when paired with a dominant one
d. each dominant gene independently influences the other genes on the chromosome

2007-03-18 05:47:38 · 4 answers · asked by crazy286 2

Here is the question... I honestly have no idea.

"Despite many attempts, researchers have been unable to get photosynthesis to proceed outside a chloroplast in a multi-celled organism. Why are researchers still interested in pursuing this goal? What possible practical use could come from attaining this goal?"

ANY HELP AT ALL IS GREATLY GREATLY APPRECIATED!

2007-03-18 05:20:27 · 5 answers · asked by Anonymous

I forgot to breathe last night

2007-03-18 05:12:34 · 8 answers · asked by Twisted Syndrome 1

2007-03-18 04:52:14 · 3 answers · asked by _Manda_ 2

I am doing a science fair project on if food effects people by color.

2007-03-18 04:49:16 · 7 answers · asked by Twisted Syndrome 1

To be specific i would like to get as much as information as possible in this subject which is a bout sex-linked diseases
Please list any of the diseases you know that occur mainly due to genetics...please help my folks...thanks for every tiny help

Have a nice day.........^ w ^

2007-03-18 04:45:36 · 3 answers · asked by Wonkyu 4

Potassium-40 will decay into the element argon-40. It's half life is about 1.3 billion years. If you found a sample that was 12.5% Potassium-40 and 87.5% argon-40, how old would you estimate that this sample was?

2007-03-18 04:44:04 · 1 answers · asked by vballchik104 1

its not a bad ? its a funny 1

2007-03-18 04:39:08 · 2 answers · asked by jugillet chick 1

....like, the eyebrows protect your eyes from sweat dripping down, and your eyelashes protect your eyes from dust etc

what is the purpose of the moustache and beard? because women dont have moustaches/beards so why do men have them??

There must be a reason!

2007-03-18 04:27:21 · 18 answers · asked by Miss Terious 3

'g/dl' is used as the unit for hemoglobin while 'pg' is used for MCH in blood test....

2007-03-18 04:12:48 · 2 answers · asked by farfalle 2

2007-03-18 03:54:47 · 7 answers · asked by Chris T 1

why do Birnaviruses contain and require two pieces of RNA?

2007-03-18 03:16:51 · 1 answers · asked by buki_girl 1

What kind of mesurement other than length would give you a better anwer to this question?

2007-03-18 03:02:44 · 3 answers · asked by _Manda_ 2

I know that plantlike protists can live in colonies but im not sure about animal-like protists.

2007-03-18 02:51:56 · 3 answers · asked by reddy911 2

im not.

2007-03-18 01:44:35 · 20 answers · asked by Anonymous

2007-03-18 01:21:51 · 4 answers · asked by Mellissa T 1

How would people look like?

2007-03-18 01:16:35 · 2 answers · asked by Ting 4