Female cone of Pinus is a

• Modified needles

• Modified long shoot

• Modified dwarf shoot

• Modified scale

Which statement is correct for bacterial transduction?

• Transfer of some genes from one bacteria to another bacteria through virus

• Transfer of genes from one bacteria to another bacteria by conjugation.

• Bacteria obtain DNA directly

• Bacteria obtain DNA from other external sources

 Which of the following is not true for a species?

• Members of a species can interbreed

• Variations occur among members of species

• Each species is reproductively isolated from every other species

• Gene flow does not occur between the populations of a species

One gene- one enzyme hypothesis of Beadle and Tatum was experimentally proved on

• Saccharomyces 

• Neurospora crassa

• Lathyrus odoratus

• Claviceps

Genes for cytoplasmic male sterility in plants are generally located in

• mitochondrial genome

• cytosol

• chloroplast genome

• nuclear genome

Bacillus thuringiensis (Bt) strains have been used for designing novel

• bio- metallurgical technique

• bio- mineralization processes

• bio- insecticidal plants

• biofertilizers

137.

Which of the following pairs is correctly matched

• Central dogma- Codon

• Okazaki fragments - Splicing

• RNA polymerase -RNA primer

• Restriction enzymes - Genetic engineering

Restriction enzymes are used in genetic engineering, because they

• can degrade harmful proteins

• can join different DNA fragments

• can cut DNA at specific base sequence

• are nucleases that cut DNA at variable sites

The Triticale is an intergeneric hybrid between

• wheat and maize

• maize and rye

• wheat and rye

• bajra and wheat

Micro-organism which act as a vehicle for foreign gene transfer in higher plants

• Agrobacterium

• E. coli

• T.M.V.

• Bacillus anihracis