Which one of the following is now being commercially produced by biotechnological procedures?
Nicotine
Morphine
Quinine
Quinine
D.
Quinine
Nowadays, genetically engineered insulin is being produced at commercial level. the biotechnological procedure involves the synthesis of two DNA sequences corresponding to A and B insulin chains. The two DNA sequences or genes are made to fuse with plasmids and later allowed to form insulin chains.
Sickle cell anaemia is
an autosomal-linked dominant trait
caused by substitution of valine by glutamic acid in the β-globin chain of haemoglobin
caused by a change in a base pair of DNA
caused by a change in a base pair of DNA
There is no DNA in
an enucleated ovum
mature RBCs
a mature spermatozoan
a mature spermatozoan
In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the
ribosomes
nucleus
dictyosomes
dictyosomes
The lac operon consists of
four regulatory genes only
one regulatory gene and three structural genes
two regulatory genes and two structural genes
two regulatory genes and two structural genes
