Transformation was discovered by:
1. Meseson and Stahl
2. Hershey and Chase
3. Griffith
4. Waston and crick
Fruit colour in squash is an example of:
1. Recessive epistasis
2. Dominant epistasis
3. Complementary genes
4. Inhibitory genes
Viruses have:
1. DNA enclosed in a protein coat
2. Prokaryotic nucleus
3. Single chromosome
4. Both DNA and RNA
The first human hormone produced by recombinant DNA technology is:
1. Insulin
2. Estrogen
3. Thyroxin
4. Progesterone
An analysis of chromosomal DNA using the Southern hybridization technique does not use:
1. Electrophoresis
2. Blotting
3. Autoradiography
4. PCR
In vitro clonal propagation in plants is characterized by:
1. PCR and RAPD
2. Northern blotting
3. Electrophoresis and HPLC
4. Microscopy
An alga which can be employed as food for human beings:
1. Ulothrix
2. Chlorella
3. Spirogyra
4. Polysiphonia
Which vector can clone only a small fragment of DNA?
1. Bacterial artificial chromosome
2. Yeast artificial chromosome
3. Plasmid
4. Cosmid
An example of ex-situ conservation is:
1. National park
2. Seed bank
3. Wildlife sanctuary
4. Sacred grove
A location with luxuriant growth of lichens on the trees indicates that the:
1. Trees are very healthy
2. Trees are heavily infested
3. Location is highly polluted
4. Location is not polluted