Question

During the process of oogenesis, meiosis happening for the first time results in the formation of

• A. primary oocyte and first polar body
• B. secondary oocyte and first polar body
• C. ovum and first polar body
• D. secondary oocyte and second polar body

Answer 1

The correct option is B secondary oocyte and first polar body

Oogenesis is a type of gametogenesis (formation of gametes) during which a female gamete (ovum) is produced via multiple divisions.

Primordial germ cells (egg germ cells; 2N) first undergo to form the oogonia and then diploid primary oocytes (2N) which on first reductional division forms a large secondary oocyte (N) and a very small first polar body.