Extranuclear inheritance is a consequence of presence of genes in
Mitochondria and chloroplasts
Endoplasmic recticulum and mitochondria
Ribosomes and chloroplast
Lysosomes and ribosomes
Edward's syndrome, Patau's syndrome and Down's syndrome are due to
If somatic cells of a human male contain single barrbody, the genetic composition of the person would be
Codominance is shown by gene controlling
$A$ normal woman, whose father had colour blindness, married a normal man. What is the chance of occurrence of colour blindness in the progeny?
Which one of the following is not a mutagen