One of the parents of a cross has mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of $F_{2}$-progenies that mutation is found in
One of the parents of a cross has mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of $F_{2}$-progenies that mutation is found in
- A
One -third of the progenies
- B
None of the progenies
- C
All of the progenies
- D
Fifty per cent of the progenies
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Hugo de Vries formulated the “Mutation Theory'' based on the experiments he conducted on
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Nicotiana sylvestris flowers only during long days and $N$.tabacum flowers only during short days, if raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross fertilized to produce self-fertile offspring. What is the best reason for considering $N .$ sylvestris and $N$. tobaccum to be separate species?
Nicotiana sylvestris flowers only during long days and $N$.tabacum flowers only during short days, if raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross fertilized to produce self-fertile offspring. What is the best reason for considering $N .$ sylvestris and $N$. tobaccum to be separate species?