karyokinesis
核分裂; 有丝分裂
核分裂; 有丝分裂
karyokinesis n 1 :
organic process consisting of the division of the nucleus of a cell during mitosis or meiosis Karyokinesis \
Kar "
y *
o *
ki *
ne `
sis \
(
k [
a ^]
r `[
i ^]*[-
o ]*
k [-
i ]*
n [=
e ]"
s [
i ^]
s ),
n . [
NL .,
fr .
Gr .
ka `
ryon a nut ,
kernel kinei ^
n to move .]
1 . (
Biol .)
The indirect division of cells in which ,
prior to division of the cell protoplasm ,
complicated changes take place in the nucleus ,
attended with movement of the nuclear fibrils ; --
opposed to {
karyostenosis }.
The nucleus becomes enlarged and convoluted ,
and finally the threads are separated into two groups which ultimately become disconnected and constitute the daughter nuclei .
Called also {
mitosis }.
See {
Cell development },
under {
Cell }.
[
1913 Webster ]
2 .
The changes that occur in the nucleus of a cell ,
especially movements of the chromosomes ,
in the process of cell division .
[
PJC ]
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