Several; DNA is super-coiled in its chromosomal state. It coils like this with the assitance of packaging proteins such as histones, condensins and cohesins. Different chromosomes (and organisms) have different packaging ratios. For example, the shortest human chromosome has an un-coiled DNA length of about 14,000 micrometers. In its chromosomal state, it has a length of about 2 micrometers, giving it a packaging ratio of 7,000.
Each chromosome contains a single DNA molecule that is highly compacted and coiled around proteins. This single DNA molecule contains all the genetic information for an organism.
True. The DNA in a chromosome is tightly packaged and condensed, so the actual length of DNA in a chromosome can be much longer than the physical length of the chromosome itself. This is possible due to the coiling and folding of DNA around histone proteins to form chromatin, allowing for a significant amount of genetic material to be compacted within a small space.
The second statement would be more correct.
genome -> chromosome -> DNA -> gene
A chromosome in humans is made up of one long DNA molecule. This DNA molecule is double-stranded and contains thousands of genes.
Each chromosome contains a single DNA molecule that is highly compacted and coiled around proteins. This single DNA molecule contains all the genetic information for an organism.
A chromosome is made up of DNA, protein, and RNA. The DNA contains the genetic information necessary for an organism's growth and development, while the proteins help the DNA stay organized and compacted within the chromosome structure. RNA is involved in various functions related to gene expression and regulation.
every and any DNA strand can constitue to a chromosome :)
True. The DNA in a chromosome is tightly packaged and condensed, so the actual length of DNA in a chromosome can be much longer than the physical length of the chromosome itself. This is possible due to the coiling and folding of DNA around histone proteins to form chromatin, allowing for a significant amount of genetic material to be compacted within a small space.
The second statement would be more correct.
There is one double helix DNA molecule per chromosome.
A chromosome is formed from a single DNA molecule.
No,because mitosis is basically the movement of the organelles,during interphase (previous to the phases of mitosis) DNA is replicated and the cell grows. Although it may seem the DNA is being abolished,it isn't. DNA is actually being compacted in mitosis,not disappearing.
At the beginning of cell division, DNA and the proteins associated with the DNA coil into a structure called a chromosome. Chromosomes are visible under a microscope and contain the genetic material (DNA) of an organism.
autosomal dna, X chromosome, Y chromosome,and mitochondrial
genome -> chromosome -> DNA -> gene
A chromosome in humans is made up of one long DNA molecule. This DNA molecule is double-stranded and contains thousands of genes.