After the first replication was observed in their experiments testing the nature of DNA replication, Meselson and Stahl could be confident of which of the following conclusions?

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#Question id: 3056

#XL - S Microbiology

Ten bacteria were inoculated into a rich medium. If at the end of ten hours the total number of cells is 10^4, then the number of elapsed generations and the generation time respectively is

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#Question id: 2139

#XL - S Microbiology

A process not involving the fusion of two membranes or two regions of the same membrane is:

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#Question id: 15409

#XL - S Microbiology

 A heterozygous trihybrid corn plant is testcrossed and the following progeny are produced (all traits are recessive to their wildtype alternative);

          booster                              6

          booster, silkless                  137       

          booster, liguleless, silkless      291

          liguleless                          142

          liguleless, silkless                  3

          silkless                            30

          booster, liguleless                  34

          wildtype                            339

What is the order of the loci on the chromosome? 

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#Question id: 5693

#XL - T Zoology

Type of nondisjunction leads to regions of tissue with different chromosome constitutions, a condition known as mosaicism is due to

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#Question id: 16482

#XL - R Botany

In vitro culture and growth of organs or parts thereof in which their various tissue components, functions are preserved both in terms of their structure and function is called as