One of the breeding techniques useful to eliminate harmful recessive genes by selection is

• Artificial insemination

• Outbreeding

• Inbreeding

• MOET

Minisatellites or VNTR's are used in

• DNA fingerprinting

• Polymerase chain reaction, (PCR)

• gene therapy

• Gene mapping

In the lac operon model, lactose molecules function is

• inducers,which bind with the operator gene

• Repressors, which bind the the operator gene

• inducers, which bind the repressor protein

• corepressore, which bind with the repressor protein

The thermostable enzymes, Taq and Pfu, isolated from thermophilic bacteria are

• RNA polymerases

• DNA ligases

• DNA polymerases

• Restriction endonucleases

The largest gene in man is

• Insulin gene

• Tumour suppressor gene

• Beta globin gene of haemoglobin

• Dystrophin

Herbicide-resistant gene in a plant is

• Mt

• Gt

• Ct

• Bt

Which has an additional X-chromosome?

• Turner’s syndrome

• Klinefelter’s syndrome

• Super female

• Down’s syndrome

Polyploidy can be induced by the application of

• Auxin

• Kinetin

• Colchicine

• Ethylene

219.

A fern differs from a moss in having

• Swimming archegonia

• Swimming antherozoids

• Independent gametophytes

• Independent sporophytes

 Development of an embryo without fertilization is called as

• Apomixis

• Polyembryony

• Parthenocarpy

• Parthenogenesis