Question

The evidence of particulate nature for the units of inheritance was first presented by _______.

• A. Mendel
• B. Correns
• C. Mójca
• D. Morgan

Answer 1

The Correct Option is A

The correct answer is (1) Mendel.

Gregor Mendel is the scientist who first presented the evidence of the particulate nature of inheritance. His famous experiments with pea plants in the 19th century demonstrated that traits are inherited as discrete units (now known as genes), rather than blending together. This led to the development of Mendel's laws of inheritance, which laid the foundation for the understanding of genetic inheritance.

Let’s review the other options:

(2) Correns: Carl Correns was a key figure in the rediscovery of Mendel's laws, but he did not first present the evidence of the particulate nature of inheritance.

(3) Mojica: Mojica is associated with the discovery of CRISPR (a genetic engineering tool) but did not contribute to the theory of inheritance.

(4) Morgan: Thomas Hunt Morgan made important contributions to the understanding of sex-linked inheritance and chromosome theory, but he was building on Mendel's work rather than first presenting the evidence of particulate inheritance.

Thus, the correct answer is (1) Mendel, as he was the first to present evidence supporting the particulate nature of inheritance.

Answer 2

Gregor Mendel’s work on pea plants provided the first concrete evidence of the particulate nature of inheritance, demonstrating how traits are passed from one generation to the next through distinct units called genes.