객관식
Which of the following best describes heredity?
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1. Introduction to Genetics
Fundamentals of Genetics
객관식
A polar body is ______ than a primary oocyte.
A
larger
B
genetically different
C
more metabolically active
D
smaller
검증된 단계별 안내1
Understand the biological context: A primary oocyte is a large cell in the ovary that undergoes meiosis to eventually form an ovum (egg). During this process, polar bodies are also produced.
Recall the process of meiosis in oogenesis: The primary oocyte divides asymmetrically to produce one large secondary oocyte and a much smaller polar body.
Consider the size difference: Because the cytoplasm is unevenly divided, the polar body receives very little cytoplasm, making it smaller than the primary oocyte.
Evaluate genetic content: Both the primary oocyte and polar body have the same genetic content initially, but the polar body is not more genetically different; it is essentially a byproduct of meiosis.
Assess metabolic activity: The primary oocyte is metabolically active to support development, whereas the polar body is not more metabolically active.
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