LIFE SCIENCE

Detailed explanation-1: -The giraffe example describes the theory of inheritance of acquired characteristics, which is the core of Lamarckism. Acquired characteristics are defined as traits that an organism acquires over their lifetime in response to environmental changes or challenges.

Detailed explanation-2: -If you took a high school biology class, you’re probably familiar with Jean-Baptiste Lamarck’s theory of evolution and its emphasis on the “inheritance of acquired characteristics”-think giraffes stretching their necks longer to reach the leaves high in trees.

Detailed explanation-3: -According to Lamarck, organisms altered their behavior in response to environmental change. Their changed behavior, in turn, modified their organs, and their offspring inherited those “improved” structures.

Detailed explanation-4: -Consider the giraffe, for example. A Darwinian theory of evolution posits that it was through random variation that some giraffes had longer necks than others. Thanks to their long necks, they were able to reach leaves high up in the trees in their environment.