1. Tardigrade
  2. Question
  3. Biology
  4. Mendel obtained wrinkled seeds in pea due to deposition of sugars instead of starch. It was due to which enzyme: -

Q. Mendel obtained wrinkled seeds in pea due to deposition of sugars instead of starch. It was due to which enzyme : -

 2492  218 AIPMTAIPMT 2001 Report Error

Solution:

In round seeds (RR/Rr) starch-branching enzyme (SBE-I) 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.