a diploid human cell contains approximately 6.4 billion base pairs of dna. how many nucleosomes are present in such a cell? assume that the linker dna encompasses 40 base pairs.

Respuesta :

In a diploid human cell contains approximately 6.4 billion base pairs of DNA, 3.2 x 10^7 nucleosomes are present .

One nucleosome comprises of about 145 to 147 bp of DNA. If their is additional 40 bp of DNA present then it should be calculated by taking total sum the base pair of DNA present for a single nucleosome .

A nucleosome is the basic repeating subunit of chromatin packaged inside the cell's nucleus they are made from histone octamer. In human about six feet of DNA is packaged inside a nucleus with a diameter less than a human hair. Histones are basic proteins and are rich in lysine and arginine residues. Each nucleosome contains around 200 bp of DNA.

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