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Accourding to weismann prediction , ever...

Accourding to weismann prediction , every organism undergoes two kinds of cell divisions. In mitosis, there is no change in chromosomal number (2n) and in Meiosis, chromosomal number is reduced to half (n).
(ii) In which cells, Meiosis takes place ?

Text Solution

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(1) If the reduction of chromosomes number is not done, the chromosomal number is doubled in the offsprings.
(2) The change in chromosomal number changes completely the characters in the individual .
(3) The offspring differs to parental generation.
(4) Abnomal characters will be formed in new generation, which are not useful for the existence of individual.
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Accourding to weismann prediction , every organism undergoes two kinds of cell divisions. In mitosis, there is no change in chromosomal number (2n) and in Meiosis, chromosomal number is reduced to half (n). (i) What does 'n' and '2n' indicate ?

Knowledge Check

  • Maintenance of equal number of chromosomes in ….(i)…..division and chromosomal number reduced to half in …..(ii)……….. Division

    A
    i-meiotic, ii-mitotic
    B
    i-mitosis,ii-meiosis
    C
    i-equal division, ii, mitotic
    D
    i-mitosis, ii-equal division

  • A cell with 2n=16 undergoes meiosis. Each of the four daughter nuclei formed at the end of the division will have

    A
    4 chromosomes- double stranded
    B
    8 chromosomes- single stranded
    C
    8 chromosomes- double stranded
    D
    4 chromosomes- single stranded

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