Chromosome to DNA

[wellhymn]

how did they know the structure of DNA??

[princesasofia34]

yo aqui necesito una traduccion al español

porque me lo han mandado para examen oral de mañana y no he entendido ni papa

asi que por favor el que lo haya hecho pon subtitulos de español abajo!

gracias! :))

[freddy123ke]

booooring..



[thisstuffisbig]

morgan freeman?

[azageshsammy]

the brain is like the d.n.a and can kills all the cell 

[bret346]

homework finished!!

[gradiuz]

thanks for video, it clarified some doubts i had.

[omfirstutube]

Gene is part of DNA, not part of chromosome. Chromosome>DNA>Gene

[jasdancer20]

@omfirstutube cell>nucleus>chromosone>DNA>ge­ne

[MadHatterTruth]

some times i wonder if people are listening to what is sayd

[captdavidwebb]

simply amazingg!

[EVWatson1]

Epigenetic factors - external materials and forces - cause cancer far more often than just a simple breakdown of the replication process - in other words external forces damage the DNA. Think about all the pullutive elements for a moment and it's obvious. Lance Armstrong knows this. This seems lost on most researchers - idiots.

[hemalitetite]

Epigenetic factors does not refer to "external materials and forces." Idiot.

[EVWatson1]

How stupid are you? Epigenetic factors include ALL factors in the environment that may alter gene expression. Materials and forces in the physical world, outside the mechanism of the gene. Get it right or keep your mouth shut. Moron.

[farouqnimer]

i never did biology before, are genes made of DNA or is DNA made of genes? I heard 2 contradicting things.

[Kelz06081984]

DNA is a long nucleic acid molecule. It has a bunch of bases that line the molecule.

A gene is a sequence of bases in the DNA that codes for a protein.

So, if there is a sequence of bases along the DNA and it doesnt code for a Protein, it is NOT called a gene.

[1091Floyd21]

Is there only one actual protein maolecule in a chromosome that contains all the genes, & that is wound around so much, OR are there many??

[CancerQuest]

Each chromosome is composed of one, very long, piece of DNA (deoxyribonucleic acid). The genes are spread out along that DNA. Note that DNA and protein are different and the actual genetic material is DNA, not protein. The DNA IS wound around proteins as part of the packaging process.

[blokers11]

great :D