Principle of Inheritance and VariationMedium
Question
In his experiment, Mendel obtained wrinkled pea. The wrinkling was due to deposition of sugar instead of starch. This happened due to the enzyme
Options
A.amylase
B.invertase
C.diastase
D.absence of starch-branching enzyme
Solution
In round seeds (RR/Rr) Starch-Branching Enzyme-1 (SBE-1) is found but is absent from wrinkled seeds. In rr seeds, a small DNA segment interferes with SBE -1 activity so that starch is not formed and free sugar gets accumulated. Resulting high osmotic pressure in rr seeds leads to shrinkage and wrinkling.
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