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91
Production of breeder seed in requires on isolation distance of
Discuss
Answer & Solution
Answer: Option B
Solution:
Production of breeder seed requires an isolation distance of 50 m.
Isolation distance is the minimum separation required between two or more varieties of the same species to keep the seed pure.
A breeder is a hundred percent physical and genetic pure seed, also the progeny of the nucleus seed.
It is multiplied in a large area as per the indent of the Department of Agriculture and Cooperation, under the supervision of the plant breeder and monitored by a committee consisting of the representatives of the state seed certification agency, ICAR nominee, and concerned breeder to maintain and check its purity.
92
The terms recon, muton and cistron were coined in 1957 by
Discuss
Answer & Solution
Answer: Option C
Solution:
The terms recon, muton, and cistron were coined in 1957 by Benzer.
These terms were coined by Seymour Benzer in an article entitled “The elementary units of heredity.”
Recon is the unit of recombination present in the DNA.
Muton is the element of the DNA that is capable of undergoing mutation easily.
The cistron was defined by an operational test applicable to most organisms that are sometimes referred to as a cis-trans test.
93
Emusculation means
Discuss
Answer & Solution
Answer: Option A
Solution:
Emasculation means the Removal of the anther.
It is the process of removal of male reproductive organs i.e. anthers in plants without affecting female parts.
It is usually done to prevent self-pollination in bisexual flowers and is widely used for the production of desired hybrids with desired traits.