Question: 100% NCERT covered from Particular Keyword.Explanations are 100% from NCERT | [Difficult level: Easy] From NCERT NEET Derived Question.
In Meiosis,
(a) division of nucleus twice but DNA replicates only
once.
(b) division of nucleus twice and DNA replicates twice.
(c) division of nucleus once and replication of DNA is
also once.
(d) division of nucleus once and DNA - replication is
twice.
Answer:
(a) Meiosis involves two sequential nuclear and cell
division. It results in four daughter cells each with
half the number of chromosomes of the parent cell,
as in the production of gametes and plant spores.
Meiosis begins with a parent cell that is diploid,
meaning it has two copies of each chromosome. The
parent cell undergoes one round of DNA replication
followed by two separate cycles of nuclear division.
The process results in four daughter cells that are
haploid, which means they contain half the number
of chromosomes of the diploid parent cell.
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