FSC Biology Book MCQs Chapter 7 Class 12





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Biology Ch 7 Class 12 Cell Cycle

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In case of neurons, post mitotic cell escapes cell cycle and remain in _______ phase whthout proliferating further

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Condensation of chromosomes reaches to the maximum during:

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The phase of mitosis in which sister chromatids move towards opposite poles:

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Crossing over occur between ____________ of homologous chromosomes:

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Microtubule subunits (for spindle fibers) are synthesized in _______ phase.

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Which of the following sub stages does not occur in prophase I?

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Crossing over is an exchange of genes between _______ resulting in a mixture of parental characteristics in offspring.

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How does the second meiotic division differ from mitosis? In the second meiotic division:

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Synthesis of microtubules increases in:

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Which statement is not true about phragmoplast?

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Meiosis occurs at the time of

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Each kinetochore gets ________ fibers in mitosis

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In which stage of meiotic division centromere divides?

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Period between two consecutive divisions is called

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At the beginning of nuclear division, the number of microtubule triplets in two pairs of centrioles that migrate to opposite poles are:

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Gametes in animals are produced by which of the following?

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The term bivalent means:

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In gametogenesis, which resultant product is non-functional?

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Interphase of meiosis lacks

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Which of the following cells does not enter G0 phase?

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Mitosis occurs in

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Failure of separation of sister chromatids is called:

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DNA is synthesized and chromosome number is doubled in

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Which of the following is NOT true for meiosis?

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Exchange of segments between homologous chromosomes is called:

UHS 2012
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If a person has 44 autosomes + XXY, he will suffer from

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Meiosis occur in

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Reduction division is:

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Mitotic apparatus in animals is formed by

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At what phase the DNA content of a cell is doubled?

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Reverse of prophase is

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Asexual offsprings can be produced by:

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Gametes in animals are produced by:

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Synaptonemal complex helps in:

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Bac

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Which of the following statements is true about metaphase?

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During meiosis, the homologous chromosomes come together and form pairs, this process is called:

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During the G2 phase:

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Microtubules are composed of

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Which of the following statements concerning nucleolus is correct?

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Diplotene is the sub-stage of:

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In meiosis II, ______ differentiate into sperms.

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Which statement is incorrect?

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Chance of a cross over between two loci is directly proportional to their

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Which is a feature of malignant tumor?

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Crossing over takes place during _____ of meiosis.

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From each pair of centrioles ________ sets of microtubules originate

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Which of the following is a type of cell division that plays an important role in evolution?

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Smooth endoplasmic reticulum is responsible for the metabolism of:

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_______ is the most critical phase of mitosis.

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_______ is the stage of mitosis characterized by the physical separation of ________ chromatids.

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During the formation of an ovum nondisjunction of the sex chromosomes occurred the ovum was then fertilized by a normal Y-bearing sperm cell which one of the following shows the sex chromosome complement of the resulting zygote?

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Process of uncontrolled cell division is due to which one of the following reasons?

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Most critical phase of mitosis is

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During cell division, the spindle fibres get attached to condensing chromosome at a highly differentiated region. This region is called as:

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The second stage of the Prophase of Meiosis, following Leptotene, during which homologous chromosomes begin to pair is called:

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Spread of tumor cells and establishment of secondary areas of growth is

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Gametes are produced by:

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In plants mitotic apparatus consists of

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A special area of centromere with specific base arrangement and specific proteins where spindle fibers are attached is called

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During anaphase, each chromosome has:

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During interphase of the cell cycle, which of the following stage is for duplication of DNA:

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Interphase is a phase of the cell cycle defined only by the absence of _______.

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During which stage of meiosis do centromeres divide?

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Feature of cancer cells in common?

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