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Unformatted text preview: micronucleus is involved in inheritance of genetic material during sexual reproduction and is only diploid. Sexual reproduction takes place through a process called conjugation. When individuals of opposite mating types meet, the adhere to each other at the oral groove. The micronuclei then divide meiotically , producing four haploid nuclei each. All but one nucleus from each paramecium disintegrate. The macronucleus also disintegrates, leaving each cell with one haploid micronucleus. These remaining nuclei then divide mitotically and the two cells swap copies of their nuclei. The cells separate and the haploid nuclei fuse, leaving each cell with a new diploid micronucleus. To form a new macronucleus, the micronucleus divides several times and the resulting nuclei develop into a macronucleus....
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This note was uploaded on 01/27/2012 for the course BIOLOGY BSC1005 taught by Professor Rodriguez during the Winter '09 term at Broward College.
- Winter '09