Question #N1039
The study of genetics is the study of genes. Scientists have discovered that genes contain instructions for building and maintaining living organisms. These instructions are contained within the sequence of chemicals that make up a gene. Some of the most interesting discoveries in genetics have been about how genes change over time, and these changes often lead to the evolution of new species. What is the main idea of the text?
The main idea of the text is that
A. genes contain instructions for building and maintaining living organisms.
B. the study of genetics is the study of genes.
C. changes in genes often lead to the evolution of new species.
D. some of the most interesting discoveries in genetics have been about how genes change over time.
Correct Answer is: C
The text emphasizes that changes in genes lead to the evolution of new species. This is the central idea of the passage.