Question

A newborn rat in Weismann's experiment was born with a normal tail even though its parents' tails had been cut off. This outcome directly contradicts which postulate of Lamarckism?

Options

• Formation of New Organs in response to a new need

• Inheritance of Acquired Characters

• Growth of organisms and their internal parts

• Use of organs strengthening and developing them

Answer 1

The rat experiment contradicts the postulate of 'Inheritance of Acquired Characters', which claims that traits acquired during an organism's lifetime are transmitted to offspring through reproductive cells. Since tail removal is an acquired modification, Lamarckism predicts tailless offspring, but rats were always born with normal tails.