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What stage of meiosis is it when the chromosomes condense and the nuclear envelope breaks down?
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What phase in meiosis does nuclear membranes reform around chromosomes?
Telophase
Why does the nuclear envelope break down in prophase?
If the nuclear envelope didn't break down, the spindle would not attach to the kinetochore proteins on the condensed chromosomes in prometaphase because the nuclear envelope would be in the way.
How are the nuclear envelope nucleolus and chromosomes relatedto one another briefly descriebe each of these structures?
The nucleus consists of two membranes, one called the NUCLEAR ENVELOPE. The nuclear envelope surrounds the cell's genetic information. This genetic information is contained in structures called CHROMOSOMES. In addition to chromosomes, most nuclei contain a region called the NUCLEOLUS.
Does a nuclear envelope surround each new set of chromosome?
At the end of mitosis or meiosis, yes.
What happens after chromosomes condense?
Chromosome condensation usually occurs before division.
What is the final step of cell division and what is the end result?
Prophase: Chromotids condense Into chromosomes, and nuclear envelope disappears
Describe the chromosome during prophase stage?
During prophase, the chromatin in the nucleus begins to condense to form chromosomes. Nuclear envelope and nucleolus dissolves. In meiosis, during early and middle prophase I of meiosis the chromosomes become distinct and rodlike. Also during early and middle prophase I of meiosis synapsis occurs. During late prophase I of meiosis the chromosomes become clearly double-stranded and the nuclear membrane begins to disappear.
What stage mitosis is it when chromosomes shorten and thicken and the nuclear membrane begins to disappear?
In prophase stage, the replicated chromosomes condense and the nuclear envelope disappears. Earlier in prophase, chromatin visible condenses into the chromosomes.
What stage does the nuclear envelope reform around the chromosomes?
In the cell cycle, the nuclear envelope reforms around each cluster of chromosomes in telophase.
Which does not occur in telephase cytokinesis is under way the nuclear envelope is being constructed the centromeres split apart chromosomes de-condense into chromatin the nucleolus reforms?
Please ask questions...
What are the stages of mitosis in order from 1-4?
Prophase - chromosomes condense and become visible, mitotic spindle starts to form, nuclear envelope dissolves Metaphase - spindle fibres attach to Choromsomes, chromosomes line up at the equator of the cell Anaphase - chromatids are pulled apart Telophase - New nuclear envelope forms, cell begins to pinch in two
What happenes in prophase?
the first stage of mitosis or meiosis in eukaryotic cell division, during which the nuclear envelope breaks down and strands of chromatin form into chromosomes.
What is the network of nuclear threads that condense to make chromosomes in mitosis called?
centromeres
What phase in meiosis does nuclear membranes reform around chromosomes?
Telophase
Why does the nuclear envelope break down in prophase?
If the nuclear envelope didn't break down, the spindle would not attach to the kinetochore proteins on the condensed chromosomes in prometaphase because the nuclear envelope would be in the way.
The pairing of homologous chromosomes before nuclear division happens in what type of cell division?
only in meosis
How are the nuclear envelope nucleolus and chromosomes related to one another briefly describe each of these structures.?
The nucleus consists of two membranes, one called the NUCLEAR ENVELOPE. The nuclear envelope surrounds the cell's genetic information. This genetic information is contained in structures called CHROMOSOMES. In addition to chromosomes, most nuclei contain a region called the NUCLEOLUS.
