Which of the following statements is not correct

Statement 4 is incorrect because genetics is fundamentally linked to evolution. Genetic variation, which arises during reproduction and through mutations, serves as the raw material for natural selection and is the 'basis for evolution' [c1][c5]. Studying variation helps scientists understand how species adapt and change over time [t5]. Statement 1 is correct as discontinuous variations (mutations) often appear suddenly [c5]. Statement 2 is correct because continuous variation, such as height, is common and influenced by both polygenic inheritance and environmental factors like nutrition [t1][t3]. Statement 3 is a well-established fact; Gregor Mendel is universally recognized as the 'Father of Genetics' for his pioneering work on inheritance rules using pea plants [c3][t1]. Therefore, the claim that genetics is 'unrelated to evolution' is scientifically false.

Sources

1. [1] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 2: PLANT AND ANIMAL KINGDOMS > the contribution of charles Darwin > p. 3
2. [2] Science , class X (NCERT 2025 ed.) > Chapter 7: How do Organisms Reproduce? > 7.1 DO ORGANISMS CREATE EXACT COPIES OF THEMSEL THEMSELVES? > p. 114
3. [3] Science , class X (NCERT 2025 ed.) > Chapter 8: Heredity > 8.2.2 Rules for the Inheritance of Traits – Mendel's Contributions > p. 129