When genetic drift occurs what causes the allele frequencies in the population to change?

When does dna replication(make a copy of itself)?

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Which food could be transported in a galvanized metal container?