Answer to Question #214543 in Genetics for moe

Question

At Metaphase I of human gametogenesis, each oocyte contains:

An aside: (1° Oocyte (2n) → 2° Oocyte (n) 1^st meiotic division → mature ovum (n) and other three gametes become polar bodies at end of meiosis after 2^nd division

1. How many chromosomes?
2. How many tetrads (bivalents)?
3. How many chromatids?
4. How many centromeres?

Answer 1

1) 23 chromosomes