In his experiment, Mendel obtained wrinkled pea. The wrinkling was due to deposition of sugar instead of starch.

Question

In his experiment, Mendel obtained wrinkled pea. The wrinkling was due to deposition of sugar instead of starch.

In his experiment, Mendel obtained wrinkled pea. The wrinkling was due to deposition of sugar instead of starch. This happened due to the enzyme

(a) amylase

(b) invertase

(c) diastase

(d) absence of starch-branching enzyme

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Correct option (d) absence of starch-branching enzyme

Explanation

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.