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why is the number of nucleolus in human cell is 10..? does it depends on haploid set of chromosomes of NOR region of SAT chromosomes..??

why is the number of nucleolus in human cell is 10..?
does it depends on haploid set of chromosomes of NOR region of SAT chromosomes..??

Grade:12th pass

2 Answers

Arun
25750 Points
4 years ago
Since in a diploid human cell, in total 10 chromosomes containing NORs exist, in principal 10 nucleoli per nucleus could be present. Usually, only one or two nucleoliare found, since NORs from several chromosomes build a common nucleolus.
Vikas TU
14149 Points
4 years ago
Dear student 
Usually only one or two nucleoli can be seen,But a diploid human cell has ten nucleolus organizer regions (NORs) and could have more nucleoli. Most often multiple NORs participate in each nucleolus. 
Cell may be called haploid if its nucleus has one set of chromosomes, and an organism may be called haploid if its body cells (somatic cells) have one set of chromosomes per cell

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