M-Phase Flashcards
which is the most dramatic period of cell cycle
m-phase
m-phase is also called _______ since chromosomes in parent and progeny cells is the same
equational division
four stages of mitosis
prophase
metaphase
anaphase
telophase
cytokinesis
in which phase of mitosis do chromatin condense and form chromosomes
prophase
in which phase do centrioles move toward the opposite poles
prophase
in which phase does the initiation of assembly of mitotic spindle, microtubules and proteinaceous components begin
prophase
which parts of the cell can’t be seen with a microscope at the end of prophase
golgi complex
endoplasmic reticulum
nucleolus
nuclear envelope
prophase is marked by
initiation of condensation of chromosomal material
metaphase is marked by
complete disintegration of nuclear envelope
in which phase is morphology of chromosomes studied easily and why
metaphase
condensation of chromosomes is complete and they can be observed under a microscope
small disc-shaped structures at the surface of centromeres of chromosomes are called
kinetochores
kinetochores serve as site of attachment of ________ to ________
spindle fibres
chromosomes
the plane of alignment of the chromosomes at metaphase is referred to as the
metaphase plate
in which phase are chromosomes moved to spindle equator and get aligned along metaphase plate through spindle fibres to both poles
metaphase
anaphase is marked by
centromere of each chromosome is split towards the poles
the two daughter chromatids of the chromosomes being split in anaphase, after splitting are called
chromosomes of the future daughter nuclei
telophase is marked by
chromosomes reaching their respective poles
in which phase do chromosomes decondense
telophase
in which phase do chromosomes lose their individuality
telophase
can you properly see chromosomes in telophase? how do they appear?
no
chromatin material tends to collect in a mass in the two poles
in which phase does nuclear envelope assemble around the chromosomal clusters
telophase
nucleolus, golgi complex and er reform in which phase
telophase
how does cytokinesis occur in animal cells
appearance of a furrow in plasma membrane
how does cytokinesis occur in plant cells
cell-plate in centre of cells growing towards the lateral walls
what does the cell-plate represent
middle lamella between two adjacent cells
in some organisms karyokinesis is not followed by cytokinesis as a result of which what happens
multinucleate condition arises leading to the formation of syncytium
example of syncytium condition
liquid endosperm in coconut
