Scientist who independently rediscovered Mendel’s results was:

The correct answer is Option (2) → Correns

Mendel published his work in 1865, but it stayed unrecognised for many years. In 1900, three scientists, de Vries, Correns and von Tschermak, independently rediscovered Mendel’s results on the inheritance of characters.

(1) Boveri — Incorrect. Theodore Boveri, with Walter Sutton, noticed that chromosomes behave like Mendel’s factors. This led to the chromosomal theory of inheritance.

(2) Correns — Correct. Carl Correns was one of the three scientists who rediscovered Mendel’s results.

(3) Morgan — Incorrect. Thomas Hunt Morgan tested the chromosomal theory by experiment in Drosophila and discovered linkage and recombination.

(4) Sutton — Incorrect. Walter Sutton united chromosomal segregation with Mendel’s principles and called it the chromosomal theory of inheritance.

NCERT Extract:
Chromosomal Theory of Inheritance – …