I want to know the molecular mechanism of non- transcription/ non- translation of recessive allele. or if it so then why dwarf and such other charaters still exist when they have no proteins.
Some recessive alleles are transcribed, but the resulting protein is different enough from the wild-type protein that it changes the phenotype. For example, in Drosophila, the white eye allele is recessive to the red eye allele; individuals that have a white allele still produce a protein from that allele, but the protein cannot function in its normal role, so the eye lacks pigment.
In other cases, mutations in promoter regions could prevent transcription, in which case you'd most likely have a recessive mutation due to lack of expression. This paper - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1472899/ - describes a study of a particular recessive allele that affects disease resistance in rice that was traced to mutations in the promoter sequence, resulting in reduced transcription of the allele.
There could be (and probably are) a ton of other mutations that would alter transcription levels - mutations in cis or trans-acting regulatory elements, for example.
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