Match the columns :
Column $I$ |
Column $II$ |
$(1)$ Lethal mutation | $(a)$ Mutation caused by external factors |
$(2)$ Spontaneous mutation | $(b)$ They are metabolic errors |
$(3)$ Induced mutation | $(c)$ As a result the mutant dies |
$(4)$ Biochemical mutation | $(d)$ Most of the mutations occurs in nature are of this type. |
$(1-c),( 2-d), (3-a), ( 4-b)$
An abnormal human baby with $‘XXX’$ sex chromosomes was born due to
Which one of the following is a physical factor that induce mutation?
What will be the number of linkage groups in maize if it has $10$ pairs of chromosomes
Study of human race is called
Colour of endosperm in maize is an example of