what is the difference between dna and chromosome ?

Question

i want know wats the material in a chromosome is only dna or other material also is in chromosome?

Answer 1

A chromosome is a large macromolecule into which DNA is normally packaged in a cell. Minimally, it is a very long, continuous piece of DNA (a single DNA molecule), which contains many genes, regulatory elements and other intervening nucleotide sequences.

The word chromosome comes from the Greek χρώμα (chroma, color) and σώμα (soma, body).

In the chromosomes of eukaryotes, the uncondensed DNA exists in a quasi-ordered structure inside the cell nucleus, where it wraps around histones (structural proteins, Fig. 1), forming a composite material called chromatin. Each chromosome has two arms, the shorter one called p arm (from the French petit, small) and the longer one q arm (q follows p in the Latin alphabet). During mitosis (cell division), the chromosomes are condensed and a spindle composed of microtubules is formed. Microtubules self-assemble from dimers of alpha and beta tubulin. They attach to chromosomes at specialized structures called kinetochores, one of which is present on each sister chromatid. Sister chromatids are attached at an area called the centromere (not necessarily at the center of the chromosome). A special DNA base sequence in the region of the kinetochores provides, along with special proteins, longer-lasting attachment in this region. This is the only natural context in which individual chromosomes are visible with an optical microscope.

Prokaryotes do not possess histones or nuclei. In its relaxed state, the DNA can be accessed for transcription, regulation, and replication.

Answer 2

DNA: substance carrying organism's genetic information: a nucleic acid molecule in the form of a twisted double strand double helix that is the major component of chromosomes and carries genetic information. DNA, which is found in all living organisms except some viruses, reproduces itself and is the means by which hereditary characteristics pass from one generation to the next.
Full form deoxyribonucleic acid.
CHROMOSOMES:is also a rod-shaped structure carrying genes: a rod-shaped structure, usually found in pairs in a cell nucleus, that carries the genes that determine sex and the characteristics an organism inherits from its parents. A human body cell usually contains 46 chromosomes arranged in 23 pairs.

Answer 3

The chromosomes are the packages of DNA in our cells. It contains MUCH, MUCH more than just DNA; many proteins are attached to DNA, DNA is wrapped around them. These proteins are very important in the regulation of how information is extracted, how mistakes are repaired.

Answer 4

a chromosome is DNA coiled around a protein and is what is split in two when a cell devides