Expected children of a blue-eyed $(recessive)$ woman and brown-eyed $(dominant)$ man who had a blue-eyed mother are likely to be
All brown-eyed
One blue-eyed and one brown-eyed
All blue-eyed
Three blue-eyed and one brown-eyed
Mongolism syndrome is caused by
Linked gene are present on
Chromosomal theory of inheritance was proposed by
Point mutation may occur due to
Self sterility in "Nicotiana'' was reported by