AP BIOLOGY

Detailed explanation-1: -Assertion :Mainly two polar bodies are released during each oogenesis in human Reason: One primary oocyte form two ova.

Detailed explanation-2: -Fertilization promotes the formation of mature ovum cells and a polar body, while the primary polar body splits and produces two polar bodies. As a result, the ensuing polar bodies in oogenesis are three.

Detailed explanation-3: -Oogenesis starts with the process of developing primary oocytes, which occurs via the transformation of oogonia into primary oocytes, a process called oocytogenesis. From one single oogonium, only one mature oocyte will rise, with 3 other cells called polar bodies.

Detailed explanation-4: -Polar bodies are very small and haploid cells that can not undergo fertilization. All the cytoplasm is segregated into one daughter cell that becomes the egg or ovum. The other polar bodies with a small amount of cytoplasm will usually die and disintegrate by apoptosis.