The term ‘gene' refers to
Sequence of amino acids in protein
A linkage group
A part of $RNA$
A portion of $DNA$
$tRNA$ is composed of about how many nucleotides
Telomerase is an enzyme which is a
Satellite $DNA$
Arrangement of chromosomes in the order of decreasing length is termed
The total number of nitrogenous bases in human genome is estimated to be about