In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the
ribosomes
nucleus
dictyosomes
dictyosomes
A.
ribosomes
Transcripiton involves the transfer of genetic information from DNA to functional mRNA. In eukaryotes, the modification of newly formed primary mRNA transcripts (pre- m-RNA) to produce functional mRNA is called RNA processing or post-transcriptional modification. it occurs in the nucleus and involves gene-splicing (i.e removal of introns from primary transcript and splicing together of exons) and capping involves the formation of a cap at 5' end by condensation of guanylate residues. The fully processes mRNA molecules are exported from the nucleus to the ribosomes for translation in the cytoplasm.
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
Which one of the following is now being commercially produced by biotechnological procedures?
Nicotine
Morphine
Quinine
Quinine
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
There is no DNA in
an enucleated ovum
mature RBCs
a mature spermatozoan
a mature spermatozoan
