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What Is a Vector

Which one of ...

Question

Which one of the following is a case of wrong matching?

A

Somatic hybridization - Fusion of two diverse cells

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B

Vector DNA - Site of tRNA synthesis

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C

Micro propagation - in vitro production of plants in large numbers

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D

Callus - Unorganized mass of cells produced in tissue culture

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Solution

The correct option is B Vector DNA - Site of tRNA synthesis
Vectors are DNA molecules that can carry a segment of foreign DNA and replicate inside the host cell. They are used in recombinant DNA technology. Most commonly used vectors are plasmids. The site for tRNA sythesis is however in the nucleus.

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Q. Which one of the following is a case of incorrect match?
(A) Somatic hybridisation - Fusion of two diverse cells
(B) Vector DNA - Site for tRNA synthesis
(C) Micropropagation - in vitro production of plants in large numbers
(D) Callus - Unorganised mass of cells produced in tissue culture

Q. Which type of plant tissue is used to obtain virus free plants in in-vitro plant tissue culture?

Q. Assertion : A major advantage of tissue culture is protoplast fusion.

Reason : A hybrid is formed by the fusion of
naked protoplasts of two plants.

Q. Read the following statements -
(a) Stamen is the male reproductive organ of the plant.
(b) Carpel is present in the centre of a flower and is the female reproductive organ of the plant
(c) Tissue culture is the production or propagation of new plants from isolated plant cells or small pieces of plant tissue in a synthetic medium of culture solution.
(d) The Rhizopus consists of fine thread-like projections called hypae.
Choose the correct statements -

Q. Tissue culture is an achievement in plant breeding. What is a somaclone?
Describe the production of somatic hybrid.

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What Is a Vector

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