Answer:
(a) Variations during mutations of
meioticre combinations are random and directionless.
Hugo de Vries based on his work on
evening primrose stated that it is mutation which causes sudden appearance of
variations that results in speciation.
He stated that mutations are
sudden, heritable and persistant in successive generation.
He contradicted Darwinian
variations that are small and directional.
You need to login to perform this action.
You will be redirected in
3 sec