B-cell survival in the follicle is dependent on?

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#Question id: 5720

#XL - R Botany

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: 9616

#XL - S Microbiology

Which mutation should least require realignment of homologous regions of a gene that is common to several related species?

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#Question id: 19605

#XL - P Chemistry

The bond angle around atom which uses sp2 hybridization is ———–

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#Question id: 10513

#XL - R Botany

Which of the following major cyanogenic glycosides are derived from the Cassava?

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#Question id: 20034

#XL - P Chemistry

In two H atoms A and 13 the electrons move around the nucleus in circular orbits of radius r and 4r respectively. The ratio of the times taken by them to complete one revolution is