2006-06-27 03:55:43 · 6 answers · asked by A H 1 in Science & Mathematics ➔ Biology
I think the questioner meant to ask about the geographic distribution of mitochondrial haplogroup M* (not haploid). What is a haplogroup? To answer that, there is some background required. There are different versions of DNA in a population. This accounts for the different physical traits between people. Some differences are silent and can only be detected by sequencing DNA. The variations of DNA are not randomly distributed. Some traits are linked together with high frequency (such as blue eyes and blond hair) so will appear as a group. A set of such variations that frequently appear together is called a haplotype. (See International HapMap Project for more info.) A hierarchy of haplotypes have been organized into lineages and called haplogroups.
The human mitochondrial genome is small, less than 16000 bases, but there are enough variations that they have been organized into sets. The data for organizing these variations have come from a limited population so one should be careful in interpreting this data. It is only the first analysis from a small number of samples from a limited number of ethnic backgrounds. Haplogroup M* gave rise to several other subgroups (M1, C, Z, D, E, G and Q) so you need to trace all these lineages. Group E was most frequently found in Han Chinese and Japanese populations.
2006-06-27 20:09:00 · answer #1 · answered by Slackenerny 4 · 0⤊ 1⤋
Alll of us (human being) have our own cell. In those cell there are two organelles that are speciffied by having their own DNA. one in the nucleus one in the mithocondria. Why there are the DNA in the nucleus? So many function there. In cell division. or even in the protein synthesis. And why there are the DNA in the mitho? That DNA will used over in the TCA Cycle process or known as the electron transport change, It is the process in te body where is the mitho produce the ATP (Adenosa Tri-Phospate) it will used by our body as the energy so that we could so something. When the body get doing a lot activity, naturally we will fell hungry right?
That is cause by our ATP has turned into ADP (Adenosa DI-Phospate). And than after having a meal. Our ADP will converted again into the ATP iN the matrix of our mitho. And re-used again and again.
NB : I`m the students of A-level. Please give the information of the university that has the human genetic faculty. Thx
2006-06-27 12:17:02 · answer #2 · answered by Double Helix 2 · 0⤊ 0⤋
Everyone has mitochondrial dna because everyone has mitochondria. The mitochondria have separate dna that is in the mitochondria instead of the nucleus, and that is why it is called mitochondrial dna.
2006-06-27 11:14:30 · answer #3 · answered by bio.nelly 2 · 0⤊ 0⤋
Mitochondira has its own DNA. All homo sapiens have mitochondira which produces ATP and provides us with energy to survive. Ever hear of rigor mortis? That is what happens to the body when mitochondria aren't able to produce ATP.
2006-06-27 11:53:04 · answer #4 · answered by Emerson 5 · 0⤊ 0⤋
mitochondrial DNA is in everybody. its genetics are passed down through females tho.
2006-06-27 10:57:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋
http://www.ars.usda.gov/research/publications/publications.htm?seq_no_115=157459
2006-06-27 11:01:22 · answer #6 · answered by X P 3 · 0⤊ 0⤋