- (formerly also meganucleus) is the
larger type of
nucleus in ciliates.
Macronuclei are
polyploid and
undergo direct division without mitosis. It controls...
- most
ciliate species,
apart from
those in
class Karyorelictea,
whose macronuclei are
replaced every time the cell divides.
Macronuclear division is accomplished...
- conjugation, the
cells separate. The old
macronuclei are destro****, and both post-conjugants form new
macronuclei, by
amplification of DNA in
their micronuclei...
- or
ellipsoid in
shape and are
usually located near the
macronuclei. For “single” type
macronuclei,
there are
depressions for the micronuclei, thus resulting...
-
structures is inherited, but how is not known,
Macronuclei p**** on many of
their characteristics to new
macronuclei, by an
unknown and
mysterious mechanism."...
- also been
shown to
engage in meiosis,
autogamy and
development of new
macronuclei when
placed under nutritional stress. Due to the
degeneration and remodeling...
-
gametes of each
organism then fuse to form
diploid micronuclei. The old
macronuclei are destro****, and new ones are
developed from the new micronuclei. Without...
-
separate the
functions of gene
expression and ****ual recombination. The
macronuclei, or
somatic nuclei, are the site of transcription,
while the smaller...
-
intermediate in the self-splicing
process of
ribosomal precursor RNA in
macronuclei of
Tetrahymena thermophila".
Nucleic Acids Research. 15 (5): 1905–20...
-
formation of
macronuclei suggested that
genetic information p****ed from an old
macronucleus to
cytoplasm to a
newly forming macronuclei, a mode of inheritance...
