Biology - November 2007

♥ I always found Twins quite enthralling and miraculous. However, do Identical Twins share the same fingerprints or DNA? In addition, if you would like to add some more interesting facts about this question, please feel free.

Thank you to all those experts!

2007-11-05 11:25:03 · 14 answers · asked by Nicole S 2

it has to be not made of any food and its due november 14 th 2007 and it has to be on the side of a pumpkin??? i need help and fast

2007-11-05 11:19:01 · 2 answers · asked by emily b 1

2007-11-05 11:17:58 · 1 answers · asked by george k 1

2007-11-05 11:15:31 · 4 answers · asked by James G 1

a. hormones may be used at a distance from where the hormones are made.
b. hormones have a slower effect than that mediated by the nervous system
c. hormones bind to receptor sites at a target cell

2007-11-05 10:46:52 · 3 answers · asked by farah m 1

A few moments ago while teaching my girlfriend about pressure points and reflex she relayed to me that she had never, "kicked" upon stimulation of the tendon below her kneecap. She is perfectly healthy and has never sustained any spinal injury thus I told her that this wasn't possible. She clearly has feeling in all extremities and shows no outward indication of any type of nerve difficiency.

Taking this into account I believed her to be incorrect in her claim and I had her sit on a bench where I proceded to check for her knee jerk reflex. She absolutely does not respond to stimulous in the required location. Upon feeling below her kneecap with my fingers she states that she feels a tickle, but there is no sensation whatsoever which signals a reflex or an abnormally located tendon.

I'm a fairly intelligent individual but I can't explain this with my level of understanding in the area of human biology. Any help is appreciated.

2007-11-05 10:45:10 · 6 answers · asked by Jake B 4

2007-11-05 10:41:16 · 1 answers · asked by Isela M 1

2007-11-05 10:28:56 · 3 answers · asked by Graham M 2

Please no plagarism. Your own thoughts on it would be nice.

2007-11-05 09:51:21 · 2 answers · asked by Qwerty 2

How does evolution explain the DNA difference between man and the closet speces to man?

I seem to understand that trial and error by nature cannot effect the splicing of genes from species to species, but man can do it by genetic engineering.

2007-11-05 09:48:13 · 3 answers · asked by pachomius2000 2

during which stage of meiosis is the diploid number of chromosomes reduced to the haploid number of chromosomes?
& also...explain the role of crossing-over in ensuring genetic variation!

2007-11-05 09:35:04 · 1 answers · asked by Anonymous

2007-11-05 09:10:52 · 4 answers · asked by songbird 1

A) muscle
B) muscle cell
C) myofibril
D) sarcomere
E) all of these

2007-11-05 09:08:25 · 0 answers · asked by Anonymous

is it the religious views or what...

2007-11-05 09:04:49 · 4 answers · asked by Breed 2

Is it the nucleus ??

2007-11-05 09:00:56 · 6 answers · asked by Bowchickawowwoww 3

A) fontanels
B) ligaments
C) keratinocytes
D) tendons
E) sarcomeres

2007-11-05 08:59:55 · 4 answers · asked by Anonymous

Is it possible that one identified as intersex has only one of the two genders' genital but is endowed with both male and female hormones?

I mean, the one that has ONLY hormonal disruption, and NOT the genetic disruption

And is it clearly distingushable from transsexual?

2007-11-05 08:20:46 · 8 answers · asked by Anonymous

First of all, let me say that I do believe in evolution. Lately, a thought occurred to me that I would really appreciate some insight into.

Humans are obviously not perfect. Since creatures evolve to become better suited to their environment, are we still evolving?
My husband read an article that said human thumbs are slowly moving down towards our wrist since we no longer need them to climb. Anyone know of any other examples of how our bodies are still evolving?

2007-11-05 07:37:54 · 15 answers · asked by Anonymous

How many megabytes, gigabytes or terabytes does the average human memory contain?

2007-11-05 06:23:23 · 7 answers · asked by CalumRouge 1

The cheetah is the fastest land-dwelling animal on the planet. It has been known to reach peak speeds of almost 80 miles per hour! It uses this speed to catch animals that are too fast to be killed by most other predators. According to Charles Darwin's ideas, the cheetah did not allways exist. Instead, it arose from slower predators. How did natural selection produce such a creature?

2007-11-05 06:16:15 · 1 answers · asked by Anonymous

what is INTERCISTRONIC and what is INTRACISTRONIC

2007-11-05 06:16:15 · 1 answers · asked by Anonymous

Restriction endonucleases are naturally made in certain organisms. What is their purpose?

2007-11-05 06:12:26 · 2 answers · asked by damigurl05 1

A significant diff. btw/ eukaryotic and prokaryotic DNA is the presence of methylation of the prokaryotic DNA. What is the purpose of the methylation?

2007-11-05 06:10:58 · 2 answers · asked by damigurl05 1

if a typical somatic cell has 32 chromosomes, how many chromosomes are expected in each gamete of that organism? pls explain. how would the answer differ from if the cell demonstrated nondysjunction.

2007-11-05 05:57:16 · 2 answers · asked by damigurl05 1

Distinguish among interphase, mitosis, and cytokinesis.

2007-11-05 05:38:29 · 7 answers · asked by Anonymous

Please Explain What It Does To THX!!!

2007-11-05 05:36:13 · 15 answers · asked by Anonymous

In terms of ecological systems, what is the difference?

2007-11-05 05:23:26 · 1 answers · asked by Anonymous

2007-11-05 03:50:49 · 3 answers · asked by Anonymous

What happens when a functional group is added to a carbon chain?


Thanks for all the help!

2007-11-05 03:40:15 · 2 answers · asked by Teresa 2

Trisomy 21 or Down syndrome occurs when there is a normal diploid chromosomal complement of 46 chromosomes, plus one extra copy of chromosome 21. Such individuals thus have 47 chromosomes. There is impaired fertility of both sexes, but females are more likely to be fertile than males. If children are born to a female with Down syndrome and a male with the normal complement of 46 chromosomes, what proportion of the offspring will be expected to have Down syndrome?

2007-11-05 03:38:46 · 2 answers · asked by Anonymous