NEET-XII-Biology
P1 year:2019
- #118Variations caused by mutation, as proposed by
Hugo de Vries are
(1) random and directional
(2) random and directionless
(3) small and directional
(4) small and directionlessdigAnsr: 2Ans : ( 2 )
Sol. According to Hugo de Vries, mutations are
random and directionless.
Devries believed mutation caused speciation
and hence called saltation (single step large
mutation).