Today, DNA receives a lot of attention by scientists. DNA testing is used to identify people for a number of reasons. What is DNA? Is DNA located anywhere else in the cell?
nuclear dna,dna testing,nucleus,scientists
- ID: 16000
- Source: DNALC.DNAi
16626. Concept 29: DNA is packaged in a chromosome.
Each chromosome is a package for one very long, continuous strand of DNA.
16087. Animal cell
Organelles in a typical animal cell.
15978. Mitochondrial DNA: a closer look
DNA found in the mitochondrion of a cell differs in structure and is separate from the DNA found in the cell nucleus. Mitochondrial DNA, or mtDNA, exists as a circular loop of double-stranded DNA rather than the linear form found in nuclear DNA. However,
15115. Integrating information using DNA markers, Kenneth Kidd
Geneticist Kenneth Kidd explains his study of human DNA variation in nuclear chromosomes.
16003. Miescher and the isolation of DNA
DNA and proteins are key molecules of the cell nucleus.
1022. Pathways, Inside the nucleus
In this section learn that an activated protein is transported into the nucleus through a pore in the nuclear membrane.
16001. Mitochondrial DNA
mtDNA testing can be used to identify remains that are now 84 years old.
16342. Animation 15: DNA and proteins are key molecules of the cell nucleus.
Friedrich Miescher and Phoebus Levene research nuclein, protein. and DNA.
15982. The first DNA fingerprint
In 1984, Alec Jeffreys produced the first DNA fingerprint. DNA-based testing methods have evolved over the years, but they still use DNA repeats as the basis for building a DNA profile.
15887. DNA packaging
DNA is coiled around proteins and packaged as chromatin within the nucleus of cells. Aaron Klug and Roger Kornberg figured out the structure of chromatin. It has been proposed that the coiling (or rather uncoiling) of DNA is a way of controlling the pro