Occasionally three polar bodies are found clinging to the mature ovum.One came from an unequal division of the ovum,but from where did the other two arise?
A)There were originally four polar bodies and one disappeared.
B)The first polar body has also divided to produce two polar bodies.
C)One is an undeveloped primary oocyte that failed to mature.
D)What you really see are two polar bodies and the sperm that will fertilize the egg.

Question

Quizplus · Accepted Answer

The first polar body, which is formed during meiosis I, can undergo a second division during meiosis II, resulting in the formation of two smaller polar bodies. Therefore, the other two polar bodies found clinging to the mature ovum most likely arose from the division of the first polar body. Option A is not correct because there are only three polar bodies present. Option C is not correct because a primary oocyte that fails to mature would not produce polar bodies. Option D is not correct because sperm cells are much smaller in size compared to polar bodies and would not be mistaken for them.

Occasionally Three Polar Bodies Are Found Clinging to the Mature