In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Can a human have 24 chromosomes?
In 1923 he published his results. Sperm contained 24 chromosomes, so if there were an equal number coming from the egg then humans must have 48 chromosomes in total, 24 pairs. Case closed.
How long a DNA is distributed in your 46 chromosomes?
In a single human cell approximately two metre long thread of dna is distributed among its 46 chromosomes.
What are the 24 chromosomes?
The autosomes are normally present in pairs. The sperm contributes one sex chromosome (X or Y) and 22 autosomes . The egg contributes one sex chromosome (X only) and 22 autosomes . Sometimes microarray is referred to as 24-chromosome microarray : 22 chromosomes, and X and Y are counted as one each, for a total of 24.