Which one of the following shows coiled RNA stands and capsomeres?
Polio virus
Tabacco mosaic virus
Measles virus
Measles virus
A.
Polio virus
In TMV RNA is a single-stranded (ss) helically coiled structure containing about 2130 capsomeres, a basic subunit of the capsid (an outer covering of protein that protects the genetic material of a virus).
There are about 16 capsomeres present in each helical turn.
Pollen tablets are available in the market for
In vitro fertilisation
breeding programmes
supplementing food
supplementing food
The first human hormone produced by recombinant DNA technology is
insulin
estrogen
thyroxin
thyroxin
Fruit colour in squash is an example of
recessive epistasis
dominant epistasis
complementary genes
complementary genes
Function of filiform apparatus is to
recognise the suitable pollen at the stigma
stimulate the division of generative cell
produce nectar
produce nectar
Which one of the following a wrongly matched?
Transcription - Writing information from DNA to t-RNA
Translation - Using information in m - RNA to make protein
Repressor protein - Binds to operator to stop enzyme synthesis
Repressor protein - Binds to operator to stop enzyme synthesis
Geitonogamy involves
Fertilisation of a flower by the pollen from another flower of the same plant
Fertilisation of a flower by the pollen from the same flower
Fertilisation of a flower by the pollen from a flower of another plant in the same population
Fertilisation of a flower by the pollen from a flower of another plant in the same population
An analysis of chromosomal DNA using the Southern hybridization technique does not use
electrophoresis
blotting
autoradiography
autoradiography
