Question

what will be the no.of chromatids in prophase-1of a cell having 10 bivalent?
a)20
b)40
c)80
d)60​

Answer 1

Answer:

80

Explanation:

1. because it is a cells

Answer 2

20 chromatids in prophase-1of a cell having 10 bivalent.

Option: (a)

Explanation:

• A chromatid is half of a ‘replicated chromosome’ which is joined together at the centromeres prior to ‘cell division’.  

• At the ‘beginning of mitosis’, a chromosome is made of ‘two sister chromatids’. A bivalent where 2n = 10, therefore has a total of 20 chromatids during the prophase stage.  

• The two sister chromatids are joined at the centrosomes and represent an X shape of chromosomes.

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