The long necks and legs of the present day giraffes were some of the basis of
Answer Details
The long necks and legs of present-day giraffes were some of the basis of Lamarck's theory of evolution. Lamarck believed that acquired traits could be passed down to offspring, so he proposed that giraffes stretched their necks to reach leaves high up in trees and that this stretching caused their necks to lengthen over generations. However, this theory has been largely disproven by the modern understanding of genetics and evolution.