DNA in the human genome is arranged into 24 distinct chromosomes. It is because of DNA's natural structure. DNA is composed of nucleic acids and it looks like a twisted ladder or a double helix.
The Human Genome Project shared their project data with the public within 24 hours of collection.
According to my research the average 10 year old has opproximently 2 brain cells. The reason is they don't ack natural and behave strangley. They should start to get dumber through their teen years till about 24. At 24 they can normally understand more about the world and why at 10 they had w brain cells.
a human produces 4 liters of saliva in 24 hr by aki
Interphase in a human liver cell typically lasts around 20-24 hours. During this phase, the cell prepares for division by growing in size, replicating its DNA, and performing normal cellular functions.
To determine the commonly deleted region on chromosome 3 in carcinoma of the uterine cervix, these samples were also examined for loss of heterozygosity at 5 other loci on chro mosome 3: RAFl(3p24-25) (14); ERBAß(3p22-24.l ) (17); DNF15S2 (3p21) (13); D3S3(3pl4) (13); and SST(3q28) (13). Loss of heterozygosity at the RAF1 locus and the ERBAßlocus was observed in one of 3 patients and 3 of 7 patients (Fig. 1, b c), respectively, but no loss was observed at 2 other loci, DNFI5S2 and SST, whereas duplication of one of two alÃeles was observed in 2 of 6 patients at SST (Table 1). Analysis of loss of heterozygosity at the ERBAßlocus was performed using 2 different DNA probes: a human ERBAßcomplementary DNA clone, pheA4; and a genomic ERBAßDNA clone, pBH302 (15- 17). The pheA4 and pBH302 probes detect BamHl and Hindlll RFLP, respectively, and loss of heterozygosity at this locus was observed in none of 2 patients by using the pheA4 probe and in 3 of 5 patients by the pBH302 probe (Table 1; Fig. lé).No information was available on loss of heterozygosity at the D3S3 locus, because none of the 18 patients was heterozygous in normal tissue at this locus. Therefore, the commonly deleted chromosomal region in carcinoma of the uterine cervix is probably a small part of the short arm of chromosome 3, including the D3S2 locus. These results strongly suggest that recessive genetic changes on chromosome 3p are involved in the development of carcinoma of the uterine cervix.
The Human Genome Project shared their project data with the public within 24 hours of collection.
There are approximately 3.2 billion base pairs in the human genome. Base pairs incorporate two DNA molecules, leading to about 6.4 billion bases (1:1 ratio between nucleobases and DNA, since nucleobases are part of DNA). Since most cells contain the whole genome (T-Cells do not, but...), we can estimate 6.4 billion bases * about 10^14 (rough amount of cells in a human), giving 6.4e24 (6.4 * 10^24) DNA molecules. This is a very rough estimate.
The Human Genome Project discovered that humans have about 24 000 genes.
4! = 24, they can be arranged in 24 different ways
The difference between human and chimp DNA is not a mere 1 or 2 percent but at least 15 percent. It must also be noted that chimpanzees have 24 pairs of chromosomes and humans have 23 pairs, so there is a definite discontinuity. Human genes are also arranged differently compared to chimps. Furthermore, neither human nor chimp DNA has been fully sequenced. Human DNA will probably be sequenced within the next two years, but chimp DNA has a much lower priority, and so will be completed much later. Until they are both fully sequenced, a proper comparison cannot be made.
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"Every million "letters" (nucleotides) take up a linear distance of only 3.4 × 10E5 nm (0.034 cm)....The [haploid] human genome...contains about 3 x 10E9 nucleotide pairs, organized as 24 chromosomes (22 different autosomes and 2 different sex chromosomes), and thus consists of 24 different DNA molecules - each containing from 50 × 10E6 to 250 x 10E6 nucleotide pairs of DNA. DNA molecules of this size are 1.7 to 8.5 cm long when uncoiled, and even the slightest mechanical force will break them once the chromosomal proteins have been removed." Thus, using the conversion factor of 0.034 cm per million (10E6) nucleotides, the uncoiled length of the total human genome would be approximately 102 cm, or 40 inches. This is pretty impressive if you consider that "A typical [dipoid] human cell thus contains ...about 6 × 10E9 nucleotide pairs of DNA....By comparison, 6 x 10E9 letters..would occupy more than a million pages [of a typical book].", as described in the Molecular Biology of the Cell.
The human body has twelve pairs of ribs for a total of 24 individual ribs.
24 ways.
4 or 24
According to my research the average 10 year old has opproximently 2 brain cells. The reason is they don't ack natural and behave strangley. They should start to get dumber through their teen years till about 24. At 24 they can normally understand more about the world and why at 10 they had w brain cells.
(7+1)*(9-6) = 24