Which of the following is used as a best genetic vector in plants?
Bacillus thurengiensis
Agrobacterium tumifaciens
Pseudomonas putida
All of the above
Balbiani rings are the structural features of
allosomes
polytene chromosomes
autosomes
Lampbrush chromosomes
Presence of tail in a child is an example of
atavism
divergent evolution
convergent evolution
mutation
X- linked recessive gene is
always expressed in male
always expressed in femlae
lethal
sub- lethal
Repressor protein is produced by
regulator gene
operator gene
structural gene
promoter gene
A.
regulator gene
The regulator gene is responsible for the synthesis of a protein called repressor. It may be active or inactive (aporepressor). The active repressor is normally seen in inducible systems while aporepressor is seen in repressible system. The repressor has an affinity for operator gene.