What is the complementary strand of dna below

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

What two fields of study provide the core information that is used to classify organisms?

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