Multiple Choice Questions

Advertisement

The experimental proof for semiconservative replication of DNA was first shown in a

  • Fungus

  • Bacterium

  • Virus

  • Plant


B.

Bacterium

Semi-conservative DNA replication was first shown in Bacterium Escherichia coli by Matthew Meselson and Franklin Stahl.


Advertisement

In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is

  • Indian Council of Medical Research (ICMR)

  • Council for Scientific and Industrial Research (CSIR)

  • Genetic Engineering Appraisal Committee (GEAC)

  • Research Committee on Genetic Manipulation (RCGM)


A ‘new’ variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to

  • Co-667

  • Sharbati Sonora

  • Basmati

  • Lerma Rojo


Select the correct match

  • Ribozyme - Nucleic acid

  • F2 × Recessive parent - Dihybrid cross

  • G. Mendel - Transformation

  • T.H. Morgan - Transduction


Select the correct statement

  • Franklin Stahl coined the term ‘‘linkage’’

  • Punnett square was developed by a British scientist

  • Transduction was discovered by S. Altman

  • Spliceosomes take part in translation


Advertisement

Select the correct match

  • Alec Jeffreys - Streptococcus pneumoniae

  • Alfred Hershey and Martha Chase - TMV

  • Francois Jacob and Jacques Monod - Lac operon

  • Matthew Meselson and F. Stah - Pisum sativum


Which of the following has proved helpful in preserving pollen as fossils?

  • Pollenkitt

  • Cellulosic intine

  • Sporopollenin

  • Oil content


Which of the following pairs is wrongly matched?

  • Starch synthesis in pea: Multiple alleles

  • ABO blood grouping: Co-dominance

  • T.H. Morgan: Linkage

  • XO type sex determination: Grasshopper


The correct order of steps in Polymerase Chain Reaction (PCR) is

  • Extension, Denaturation, Annealing

  • Annealing, Extension, Denaturation

  • Denaturation, Annealing, Extension

  • Denaturation, Extension, Annealing


Advertisement

Offsets are produced by

  • Meiotic divisions

  • Mitotic divisions

  • Parthenogenesis

  • Parthenocarpy