Hugo de Vries formulated the “Mutation Theory'' based on the experiments he conducted on
Hugo de Vries formulated the “Mutation Theory'' based on the experiments he conducted on
- A
Althea rosea
- B
Pisum sativum
- C
Drosophila melanogaster
- D
Oenothera lamarckiana
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$A$ normal woman, whose father had colour blindness, married a normal man. What is the chance of occurrence of colour blindness in the progeny?
$A$ normal woman, whose father had colour blindness, married a normal man. What is the chance of occurrence of colour blindness in the progeny?
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.
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. |