karyomere

kar·y·o·mere

(kar'ē-ō-mer'),

A vesicle containing only a small part of the typical nucleus, usually following an abnormal mitosis.

[karyo- + G. meros, part]

karyomere

(kăr′ē-ō-mēr″) [″ + meros, part]

1. Chromomere.

2. A vesicle containing only a small portion of the nucleus.

References in periodicals archive ?

report on in vivo studies of karyomere nuclear membrane fusion and endoplasmic reticulum shaping that were motivated by earlier in vitro studies of male pronuclear envelope formation that occurs soon after fertilization.

Cell biology of gametes and embryos: insights from marine invertebrates: introduction to a virtual symposium in the biological bulletin

An example is shown in Figure 10 in which karyomere fusion is greatly delayed in eggs injected with 100 [micro]g/m1 DGK.

Since membrane curvature has also been postulated to play a role in membrane fusion because of the requirement for extreme bending in the fusion stalk, we tested the effects of microinjection of DGK and Synl on fusion of the nuclear envelopes of karyomeres. Karyomeres are individual chromosomes surrounded by nuclear envelopes that form in many but not all early embryos (Wilson, 1898).