Question

Which of the following would describe Lamarck’s ideas about evolution?

Answer 1

Answer;

A mouse loses its tail in a fight. Its offspring will not have tails.

Explanation;

Lamarck believed that traits developed during an individuals lifetime would be passed on to the individuals offspring. This is on contrast to Darwin's theory of Natural Selection: Individuals with a competitive edge within a population are more likely to survive and reproduce, thereby passing their genes explaining that particular phenotype to the next generation.  

Answer 2

Answer is A mouse loses its tail in a fight. Its offspring will not have tails.

Lamarck’s advocates ‘use and disuse’ principle and inheritance of acquired characters. Use and disuse principle says that Individuals strengthen or build up the characteristics which are used more often, and the characteristics that are useless or seldom used are degenerated or lost and the traits that are acquired by an individual during its lifetime are inherited by its progeny.