Practice free Cell cycle and Cell Divisions (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
In a diploid cell, at which stage of cell cycle, the amount of DNA is doubled?
(d): S-phase is known as synthetic phase. In this stage replication of DNA takes place on the template of the existing DNA and thus the amount of DNA per cell doubles. If the initial amount of DNA is denoted as 2C, then it increases to 4C.
Which is the longest phase of the cell cycle?
(b): Cell cycle is divided into 2 phase. (i) Interphase (a period of preparation for cell division), (ii) M phase (the actual period of cell division). The interphase cell is metabolically quite active. Interphase is the long non dividing phase further divided into G1, S and G2. It occupies 75 to 90 % of entire cell division time.
Identify the correct matched pair.
In anaphase ll of meiosis centromeres divide and the spindle fibres pull the chromatids to opposite poles. Four groups of chromosomes are formed in the end of anaphase ll.
Calcium dependent Kinases can control
Calcium Dependent Kinases (CDKs) have the ability to control cell cycle activities during cell division.
During meiosis, the sister chromatids separate during:
Anaphase II begins with the simultaneous splitting of the centromere of each chromosome (which was holding the sister chromatids together), allowing them to move toward opposite poles of the cell.
(page-169)
During meiosis I in human, one of the daughter cells receives:
Meiosis involves pairing of homologous chromosomes and recombination between them. Meiosis I is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S phase.
(page-167)
Chromosomes decondense into diffuse chromatin:
During telophase, the chromosomes that have reached their respective poles decondense and lose their individuality. The individual chromosomes can no longer be seen and chromatin material tends to collect in a mass in the two poles.
(page-166)
The total DNA content of each daughter cell is reduced during meiosis because:
Meiosis is called as reductional division. The DNA content of each daughter cell is reduced during meiosis because chromosomes do not replicate while cell divides.
(page-168,169)
Which of the following is not true for sister chromatids?
During meiosis I, homologous chromosomes separate while during meiosis II, sister chromatids separate.
(page-168,169)
Which of the following statements is True?
All of the above statements with respect to cytokinesis are true.
(page-166)
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