polydactyly in man is due to :

Polydactyly ihn man is due to

Haemophilia in man is due to

Haemophilia in man is due to

Colour perception in man is due to

Colour perception in man is due to

Colour perception in man is due to

Colour perception in man is due to

Colour perception in man is due to

There is trisomey of chromosoome 13 which is characterised by mental retardation slopin g forehead, deformed face, polydactyly, cardiant defects ,etc The syndrome is