The experimental proof for semiconservative
replication of DNA was first shown in a [new]
(1) Fungus
(2) Bacterium
(3) Plant
(4) Virus

Select the correct statement :
(1) Franklin Stahl coined the term "linkage".
(2) Punnett square was developed by a British
scientist.
(3) Spliceosomes take part in translation.
(4) Transduction was discovered by S. Altman.

Offsets are produced by
(1) Meiotic divisions
(2) Mitotic divisions
(3) Parthenocarpy
(4) Parthenogenesis

Which of the following pairs in wrongly matched ?
(1) Starch synthesis in pea : Multiple alleles
(2) ABO blood grouping : Co-dominance
(3) XO type sex determination : Grasshopper
(4) T.H. Morgan : Linkage

Which of the following flowers only once in its
life-time ?
(1) Bamboo species
(2) Jackfruit
(3) Mango
(4) Papaya

Select the correct match :
(1) Alec Jeffreys - Streptococcus
pneumoniae
(2) Alfred Hershey and - TMV
Martha Chase
(3) Matthew Meselson - Pisum sativum
and F. Stahl
(4) Francois Jacob and - Lac operon
Jacques Monod

Which of the following has proved helpful in
preserving pollen as fossils ?
(1) Pollenkitt
(2) Cellulosic intine
(3) Oil content
(4) Sporopollenin

Stomatal movement is not affected by
(1) Temperature
(2) Light
(3) ``O_2`` concentration
(4) ``CO_2`` concentration

The stage during which separation of the paired
homologous chromosomes begins is
(1) Pachytene
(2) Diplotene
(3) Diakinesis
(4) Zygotene

The two functional groups characteristic of sugars
are
(1) hydroxyl and methyl
(2) carbonyl and methyl
(3) carbonyl and phosphate
(4) carbonyl and hydroxyl

Which of the following is not a product of light
reaction of photosynthesis ?
(1) ATP
(2) NADH
(3) NADPH
(4) Oxygen

Stomata in grass leaf are
(1) Dumb-bell shaped
(2) Kidney shaped
(3) Rectangular
(4) Barrel shaped

Which among the following is not a prokaryote ?
(1) Saccharomyces (2) Mycobacterium
(3) Nostoc (4) Oscillatoria

Which of the following is true for nucleolus ?
(1) Larger nucleoli are present in dividing cells.
(2) It is a membrane-bound structure.
(3) It takes part in spindle formation.
(4) It is a site for active ribosomal RNA synthesis.