Which two of the following are the CORRECT statements ?

P. Nondisjunction in the parental meiosis is not essential to produce diploid organisms

Q. Nondisjunction in the parental meiosis is essential to produce aneuploid organisms

R. Nondisjunction in the parental meiosis is essential to produce hexaploid organism

S. Nondisjunction in the parental meiosis is essential to produce tetraploid organisms

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#Question id: 8898

#XL - T Zoology

Which extant chordates are postulated to be most like the earliest chordates in appearance?

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#Question id: 20169

#XL - P Chemistry

If the radius of first Bohr orbit be a0, then the radius of third Bohr orbit would be

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#Question id: 11380

#XL - R Botany

Which of the following is/are NOT valid explanation(s) for the observed pattern of species richness?

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#Question id: 8914

#XL - S Microbiology

Which of the following is (are) unique to animals?

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#Question id: 1053

#XL - T Zoology

Phages that can either replicate and cause cell lysis or can integrate their DNA into the host DNA are called