Discontinuous variations are
Mutations
Acquired characters
Essential features
Nonessential features
(a) Mutation causes discontinuous variations.
$A$ : Holandric traits are passed from one generation to the next generation. $R$ : These traits appear more frequently in one sex than in other.
The stored blood must be free from
Crossing over is advantageous because it brings about
In Cooley's Anemia, the affected chain of a haemoglobin is
The first plant in which chromosomal basis of sex determination was discovered is
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