Question

During conjugation in Paramecium:

• A. the zygote nucleus undergoes eight successive divisions in each conjugant
• B. out of the twelve macronuclei formed, four nuclei degenerate
• C. out of the four micronuclei formed, three nuclei degenerate
• D. out of the sixteen nuclei formed from the zygote nucleus, twelve become macronuclei and four become micronuclei

Answer 1

Answer: (C)

In conjugation, the nucleus of the synkaryon divides 3 times to form 8 nuclei. Out of these, 4 become macronuclei and remaining 4 are micronuclei. Out of these 4 micronuclei, 3 degenerate and only single micronucleus remains present.