Somaclonal variation appears in plantsa)Raised in tissue cultureb)Growing in polluted soil or waterc)Exposed to gamma raysd)Transformed by recombinant DNA technologyCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Somaclonal variation is the variation seen in plants that have been produced by plant tissue culture.Somaclonal variation is not restricted to, but is particularly common in plants regenerated from callus. The variations can be genotypic or phenotypic, which in the latter case can be either genetic or epigenetic in origin. Typical genetic alterations are: changes in chromosome numbers (polyploidy and aneuploidy), chromosome structure (translocations, deletions, insertions, and duplications), and DNA sequence (base mutations) these all make some variations in it...

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Option A is write bcs the Somacolns are obtain from tissue culture since bcs Somacolns means same type so option A is write

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Option A : Raised in tissue culture

Answer

Somaclonal variation is the variation seen in plants that have been produced by plant tissue culture. Chromosomal rearrangements are an important source of this variation. ... Somaclonal variation is not restricted to, but is particularly common in, plants regenerated from callus.

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Yes basically in tissue culture similar offsprings are producef

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Somaclonal variation in plants

Somaclonal variation refers to the genetic variation that arises in plants that have been raised in tissue culture. This phenomenon occurs due to the genetic instability that is associated with the regeneration of plants from callus tissue.

Factors that influence somaclonal variation

Various factors can influence somaclonal variation in plants. These include:

- Tissue culture conditions: The type of culture media used, the concentration of plant growth regulators, and the duration of culture can all affect the level of somaclonal variation that occurs.

- Stress: Plants that are grown under stress conditions, such as those exposed to drought, high temperatures, or high levels of salinity, are more likely to exhibit somaclonal variation.

- Chemical exposure: Plants grown in polluted soil or water may be exposed to chemicals that can induce somaclonal variation.

- Radiation: Plants that are exposed to gamma rays or other forms of radiation can exhibit somaclonal variation.

- Recombinant DNA technology: Plants that have been transformed using recombinant DNA technology may exhibit somaclonal variation due to the insertion of foreign DNA into their genomes.

Implications of somaclonal variation

Somaclonal variation can have both positive and negative implications for plant breeding and biotechnology. On the positive side, somaclonal variation can lead to the generation of new plant varieties with desirable traits, such as disease resistance or increased yield. On the negative side, somaclonal variation can also lead to the generation of undesirable traits, such as reduced fertility or altered growth patterns.

Conclusion

In summary, somaclonal variation is a phenomenon that occurs in plants that have been raised in tissue culture. This genetic variation can arise due to various factors, such as tissue culture conditions, stress, chemical exposure, radiation, or recombinant DNA technology. Somaclonal variation can have both positive and negative implications for plant biotechnology and breeding.

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