Question

How many polar bodies are formed during oogenesis in humans?

Answer 1

Polar bodies formed during oogenesis in humans

1. During human oogenesis, three polar bodies are created.
2. Polar bodies are tiny cytoplasmic exclusion structures that form to contain extra DNA produced during oocyte meiosis, which occurs after sperm fertilization.
3. The zygote contains roughly 2-3 polar bodies, which are derived from the oocyte.
4. This figure is determined by whether or not the first polar body (produced during meiosis I) splits during meiosis II.
5. Excess DNA generated from reductive division makes up such an exclusion body (2nd and 3rd polar bodies are formed from meiosis II at the time of fertilization).
6. Such polar bodies do not contribute to the zygote's, foetus', or embryo's future genetic complement.