Polytene chromosomes were first observed by

Polytene chromosome was first observed by (a) Stevens and Wilson (b) Heitz and Bauer (c) Balbiani (d) Khorana

Ribosomes were first observed by

Polytene chromosome was first observed by

The terminal end of a chromosomes were first obsereved by

Chromosome were first seen by

Chromosomes were first seen by

Chromosome were first seen by

Ribosomes were first observed by ………….

Polytene chromosomes were discovered by

Polytene chromosomes were discovered in