NEET BIOLOGY

Detailed explanation-1: -work of Lamarck He enunciated the law of use and disuse, which states that when certain organs become specially developed as a result of some environmental need, then that state of development is hereditary and can be passed on to progeny.

Detailed explanation-2: -Darwin borrowed the term from English sociologist and philosopher Herbert Spencer, who first used it in his 1864 book Principles of Biology. (Spencer came up with the phrase only after reading Darwin’s work.)

Detailed explanation-3: -Darwin’s theory became accepted because it had more evidence that supported it. Lamarck’s theory suggests that all organisms become more complicated over time, and therefore doesn’t account for simple organisms, such as single-cell organisms.

Detailed explanation-4: -Lamarckism is considered as a wrong concept because the characters acquired by an organism during its lifetime due to use or disuse do not affect the genetic makeup of the organism. They are simply phenotypic changes.