In metaphase, the chromosomes line up along the metaphase plate. Then the metaphase checkpoint ensures that the mitotic spindle has formed correctly and the chromosomes are properly aligned on the metaphase plate. What is the metaphase of a cell? Metaphase represents one of the steps of mitosis,...
In metaphase, the chromosomes line up along the metaphase plate. Then the metaphase checkpoint ensures that the mitotic spindle has formed correctly and the chromosomes are properly aligned on the metaphase plate. What is the metaphase of a cell? Metaphase represents one of the steps of mitosis,...
Meiosis has the same four steps as mitosis (prophase, metaphase, anaphaseandtelophase) but includes two successive divisions that result in four daughter cells instead of two, each with 23 chromosomes instead of 46. This is enabled by the markedly different mechanics ofmeiosis 1andmeiosis 2. The...
As cells exited metaphase, the B1-type cyclins became degraded, as shown by time-lapse images. A stable variant of cyclin B1;1-GFP fusion protein, in which the destruction box had been mutated, maintained its association with the nuclear material at later phases of mitosis such as anaphase ...
of the cell. Each pair of chromosomes—called atetrad, or a bivalent—consists of four chromatids. At this point, the homologous chromosomes exchange genetic material by the process of crossing over (seelinkage group). The homologous pairs line up along the midline of the cell inmetaphaseI ...
a checkpoint during mitosis ensures that the cell’s spindle fibres are properly aligned in metaphase before thechromosomesare separated in anaphase. If DNA damage or abnormalities in spindle formation are detected at these checkpoints, the cell is forced to undergo programmed cell death, orapoptosis...