The number of linkage group(s) present in Escherichia coli is

1.  one
2.  two
3.  four
4.  seven

1.  senescent
2.  dividing rapidly
3.  storing food material
4.  differentiating

1.  mimicry
2.  predation
3.  adaptation
4.  camouflage

1.  present in plants cell at metaphase stage
2.  inclusion bodies in bacteria
3.  produced in insects during metamorphosis
4.  chromatophores in animal’s skin

1.  Robertson
2.  Robert Hooke
3.  Singer and Nicholson
4.  Gorter and Grendel

1.  ribosome
2.  mitochondria
3.  chloroplast
4.  Golgi bodies

1.  inducers, which bind with the operator gene
2.  repressors, which bind with the operator gene
3.  inducers, which bind with the repressor protein
4.  corepressors, which bind with repressors protein