Assertion : Someaclonal variations may be presnt in plants produce from callus. Resons : Somaclonal variations are caused due to recombination during meiosis. a. If both the assertion and the reason are true and the reasons is a correct explanation of the assertion
b. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
c. If the assertion is true but the reson is false
d. If both the assertion and reason are false

Question

Assertion : Someaclonal variations may be presnt in plants produce from callus.  Resons : Somaclonal variations are caused due to recombination during meiosis. a. If both the assertion and the reason are true and the reasons  is a correct explanation of the assertion 
b. If both  the assertion and reason are true but the reason is not a correct explanation of the assertion 
c. If the assertion is true but the reson is false 
d. If both the assertion and reason are false

Filo · Accepted Answer

Step 1: Explain the concept of somaclonal variation
Somaclonal variation is a heritable variation in plants regenerated from cell cultures (callus). This variation is a result of changes in the structure of chromosomes and genes, such as gene mutations, polyploidy, gene amplification, altered expression of multigene families, transposable element expression, and crossing over of multigene families.​

Step 2: Explain the causes of somaclonal variation
The causes of somaclonal variation include structural changes in chromosomes and genes, gene mutations, polyploidy, gene amplification, altered expression of multigene families, transposable element expression, and crossing over of multigene families.​

Step 3: Clarify the difference between the given statement and the reason
The given statement is true because somaclonal variation does occur in plants regenerated from cell cultures. However, the reason is false because it does not provide an accurate explanation for the causes of somaclonal variation.​

Question Text	Assertion : Someaclonal variations may be presnt in plants produce from callus. Resons : Somaclonal variations are caused due to recombination during meiosis. a. If both the assertion and the reason are true and the reasons is a correct explanation of the assertion b. If both the assertion and reason are true but the reason is not a correct explanation of the assertion c. If the assertion is true but the reson is false d. If both the assertion and reason are false
Topic	Inheritance
Subject	Biology
Class	Class 12
Answer Type	Text solution:1

Text solutionVerified

Practice more questions on Inheritance

Students who ask this question also asked