Nucleotide bases in one strand can only be paired with specific bases in the other strand. Why does this characteristic of DNA t hat makes it useful as hereditary material?

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Explain the significance of thesaurus geographicus