Dictionary » M » Macronucleus



The larger nucleus (or sometimes nuclei) in ciliate protozoans. Derived from the micronucleus by a process of dna polytenisation. The dna in the macronucleus is actively transcribed. The macronucleus degenerates before conjugation. Part of the nuclei in protozoans responsible for cell division.

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having two or more nucleus... is it better?

paramaecium has 2 nuclei...the macronucleus looks after somatic function of the cell and the micronucleus looks after reproduction ....hence there is a division of labour which can be efficient...but this certainly depends upon the situations ...

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by rg
Fri May 05, 2006 11:28 am
Forum: Microbiology
Topic: having two or more nucleus... is it better?
Replies: 11
Views: 7830

yet another eukaryote question

... present one or plus nuclei (with a nuclear membrane) are Eukaryotes. Paramecium is a protist that has 2 nuclei: 1 called micronucleus and 1 called macronucleus (I'm sorry if I wrong some word in english). There are 5 kingdoms: Monera--> are prokaryotes without nucleus Protista; Fungi; Plantae; ...

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by tursiops
Sat Oct 22, 2005 3:49 pm
Forum: Cell Biology
Topic: yet another eukaryote question
Replies: 8
Views: 4076

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