Post by Blessed Devil on May 20, 2009 7:21:34 GMT 7
Are now being answered.
Question 1: Which came first? The chicken or the egg?
The short answer: The egg came first.
The long answer:
Reference:
HowStuffWorks
In nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote.
Chickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken.
Prior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first.
Question 2: If man evolved from apes, then why are there still apes?
The short answer: No, humans did not evolve from any current non-human apes. Rather, humans and apes have a common ancestor.
The long answer:
Reference:
Brunet M, Guy F, Pilbeam D, et al (2002). "A new hominid from the Upper Miocene of Chad, Central Africa"
Truth of the statement that "Humans are descended from monkeys" depends on whether the last common ancestor of the parvorder Catarrhini could be described as a monkey. Humans did not evolve from any current (non-human) apes. (Some scientists say that humans are a type of ape, biologically speaking, but that is not common word usage.) Rather, humans and other modern simians—chimpanzees, gorillas, orangutans, baboons, etc.—all share an extinct common early ancestor. Humans are more closely related to modern fellow apes than to monkeys, and humans and other apes share a later common ancestor that lived around 7 million years ago in the late Miocene epoch. However, fossil discoveries of "recently" (as in, only millions of years ago) extinct species are, in the experience of paleontologists, rarely direct ancestors of living species (cf. missing link). Clarity here is affected by people who are unaware of recent taxonomic shufflings-around of the biological names and taxa in the Anthropoidea: for example, in former times the Hominidae only included the genus Homo and the most man-like of the extinct genera.
Question 3: Does shaving cause the hair to grow thicker, darker, or coarser?
The short answer: No.
The long answer:
Reference:
Snopes
Shaving does not cause hair to grow back thicker or coarser or darker. This belief is due to the fact that hair that has never been cut has a tapered end, whereas, after cutting, there is no taper. Thus, it appears thicker, and feels coarser due to the sharper, unworn edges. Hair can also appear darker after it grows back because hair that has never been cut is often lighter due to sun exposure.
Question 4: Is there a cure for split ends?
The short answer: Yes. A hair cut. Not hair care products.
The long answer:
Reference:
Disabled World
Although there are hair care products which are marketed as being able to repair split ends and damaged hair, there is no such cure. A good conditioner might prevent damage from occurring in the first place, but the only way to get rid of split ends after they appear is by a simple hair cut.
Question 5: Does sugar cause hyperactivity in children?
The short answer: No.
The long answer:
Reference:
BMJ
Sugar does not cause hyperactivity in children. Double blind trials have shown no difference in behaviour between children given sugar full or sugar-free diets, even in studies specifically looking at children with attention-deficit/hyperactivity disorder or those considered "sensitive" to sugar. In fact, it was found that the difference in the children's behaviour was all in the parents' minds.
Question 6: Can paper be folded in half more than 7/8/ times?[/u]
The answer: Yes. A football field-sized sheet of paper was folded in half eleven times on episode 72 of Mythbusters.
Question 1: Which came first? The chicken or the egg?
The short answer: The egg came first.
The long answer:
Reference:
HowStuffWorks
In nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote.
Chickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken.
Prior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first.
Question 2: If man evolved from apes, then why are there still apes?
The short answer: No, humans did not evolve from any current non-human apes. Rather, humans and apes have a common ancestor.
The long answer:
Reference:
Brunet M, Guy F, Pilbeam D, et al (2002). "A new hominid from the Upper Miocene of Chad, Central Africa"
Truth of the statement that "Humans are descended from monkeys" depends on whether the last common ancestor of the parvorder Catarrhini could be described as a monkey. Humans did not evolve from any current (non-human) apes. (Some scientists say that humans are a type of ape, biologically speaking, but that is not common word usage.) Rather, humans and other modern simians—chimpanzees, gorillas, orangutans, baboons, etc.—all share an extinct common early ancestor. Humans are more closely related to modern fellow apes than to monkeys, and humans and other apes share a later common ancestor that lived around 7 million years ago in the late Miocene epoch. However, fossil discoveries of "recently" (as in, only millions of years ago) extinct species are, in the experience of paleontologists, rarely direct ancestors of living species (cf. missing link). Clarity here is affected by people who are unaware of recent taxonomic shufflings-around of the biological names and taxa in the Anthropoidea: for example, in former times the Hominidae only included the genus Homo and the most man-like of the extinct genera.
Question 3: Does shaving cause the hair to grow thicker, darker, or coarser?
The short answer: No.
The long answer:
Reference:
Snopes
Shaving does not cause hair to grow back thicker or coarser or darker. This belief is due to the fact that hair that has never been cut has a tapered end, whereas, after cutting, there is no taper. Thus, it appears thicker, and feels coarser due to the sharper, unworn edges. Hair can also appear darker after it grows back because hair that has never been cut is often lighter due to sun exposure.
Question 4: Is there a cure for split ends?
The short answer: Yes. A hair cut. Not hair care products.
The long answer:
Reference:
Disabled World
Although there are hair care products which are marketed as being able to repair split ends and damaged hair, there is no such cure. A good conditioner might prevent damage from occurring in the first place, but the only way to get rid of split ends after they appear is by a simple hair cut.
Question 5: Does sugar cause hyperactivity in children?
The short answer: No.
The long answer:
Reference:
BMJ
Sugar does not cause hyperactivity in children. Double blind trials have shown no difference in behaviour between children given sugar full or sugar-free diets, even in studies specifically looking at children with attention-deficit/hyperactivity disorder or those considered "sensitive" to sugar. In fact, it was found that the difference in the children's behaviour was all in the parents' minds.
Question 6: Can paper be folded in half more than 7/8/ times?[/u]
The answer: Yes. A football field-sized sheet of paper was folded in half eleven times on episode 72 of Mythbusters.
