What is the role of microtubules in mitosis? What is the difference between mitosis and meiosis in relation to cell division? What is the purpose of mitosis? What kinds of cells need mitosis and what kinds do not? What role does mitosis play in the growth of an embryo?
What role do meiosis and mitosis play in maintaining the integrity of the genetic code during (a) cloning? (b) sexual reproduction? What role does meiosis play in sexual reproduction? What are the roles of meiosis and...
The first thing we need to do is answer the question, “What is mitosis?”In cell biology, mitosis is a part of what is called thecell cycle. The cell cycle, sometimes called the cell-division cycle, is the series of events that occur in a cell that lead to duplication of that cell...
Telophase I proceeds much as it does in mitosis, resulting in two daughter cells. However, these daughter cells are considered haploid, because each of them only has 23 chromosomes (one set). In other words, each daughter cell has only one chromosome from each homologous pair. It is importan...
When the cell divides, each daughter cell has one replicated copy of all 23 chromosomes, rather than the daughter chromosomes created in mitosis. Meiosis I, then, does not involve pulling chromosomes apart at their centromeres; all 46 centromeres remain intact at the onset of meiosis II. ...
Cell division begins duringprophaseof mitosis. During prophase, the DNA condenses intochromosomesand fibers begin to extend from the centromeres, the part of the chromosome that links the two arms, or chromatids. The nuclear membrane begins to dissolve during prometaphase, and microtubules attach ...
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(cytology) An organelle, near the nucleus in the cytoplasm of most organisms, that controls the organization of its microtubules Centromere A specialized condensed region of a chromosomes that appears during mitosis where the chromatids are held together to form an X shape. Centrosome A peculiar ro...
aWe recently showed that the Drosophila transforming acidic coiled-coil (D-TACC) protein is located in the centrosome, interacts with microtubules, and is required for mitosis in the Drosophila embryo. 我们最近表示,变换酸性卷起盘绕D-TACC蛋白质 (的) 果蝇在果蝇胚胎位于中心体,与微管互动和为有丝...
What does chiasmata hold together? At the end of prometaphase I, each tetrad is attached to microtubules from both poles, with one homologous chromosome facing each pole. Thehomologous chromosomesare still held together at chiasmata. What is the difference between chiasmata and synapsis?