meiotic question?

Question

which meiotic division is known as reduction division?

Answer 1

Meiosis I, and specifically at the end of telophase I.

In meiosis I, homologous chromosomes align: that is cs #n from dad and cs #n from mom meet up at the metaphase plate. These have already replicated, so really it's 2 copies of each chromosome, connected at the centromere. The homologous chromosomes share some portions of DNA in a process known as recombination.
When meiosis I ends, each chromosome is drawn to a different cell. However, they don't migrate according to mom v dad; that is, one daughter cell can have cs #1 from dad and cs#5 from mom. The important point here is that each daughter cell has only one set of unique chromosomes. Every chromosome is doubled, but that means you have twice as much of the same DNA. So, you only have one allele for every gene. This is the definition of haploid (n) - just one allele. (Alleles are just variations of a gene.)
Meiosis II is when these copies of the same chromosomes split into 4 total daughter cells (2 from each of the original daughter cells). Now the chromosomes are no longer doubled, and each cell remains in the haploid state.

Answer 2

Reduction happens in meiosis I.

Reduction means that the number of chromosomes is reduced from diploid to haploid, or from 2n to n.

Answer 3

the second one