dna is a huge molecule but if there are 23 pairs of chromosomes , so the dna is not continuous... is it?
2007-11-16 06:43:23 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Chromosomes are hypercoiled DNA. However, each is separate, so, you are correct that the DNA is not continuous.
2007-11-16 06:49:00 · answer #1 · answered by kt 7 · 2⤊ 0⤋
DNA is the instructions providing all the information necessary for a living organism to grow and function are present in every cell.
The instructions are in the form of a molecule called DNA.
The structure of DNA is represented by a ladder twisted into a spiral shape (a double helix), with each rung of the ladder represented by a pair of bases.
There are four bases:
adenine (A),
cystosine (C),
guanine (G) and
thymine (T)
A pairs with T and C pairs with G.
You can think of each base as representing a letter, with the letters grouped in threes to form words and a number of words making a sentence, or a gene.
But what is a gene?
Genes are like instruction manuals that contain directions to build the proteins to make our bodies function.
2007-11-17 17:24:51 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You are correct. Each half chromosome has a separate molecule of DNA. So humans have 46 DNA molecules in each nucleus.
2007-11-16 14:48:50 · answer #3 · answered by Sandy G 6 · 3⤊ 1⤋
Nope, it's not. Nor does a protein restrict itself to one chromosome. Several chromosomes can contribut to just one protein molocule. The way it works is actually pretty amazing.
2007-11-16 15:02:01 · answer #4 · answered by tiger b 5 · 1⤊ 0⤋