Which is the most ancient human species known?
1.Homo ergaster
2.Homo erectus
3.Homo habilis
4.Homo sapiens
3
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Describe the procedure used for colony hybridization and why it is useful
What will be an ideal response?
The individuals who determined that Griffith's transforming principle was DNA were __________
A. Hershey and Chase B. Avery, Macleod, and McCarty C. Watson and Crick D. Creighton and McClintock
Which of the following factors will influence the action of microbial agents?
A. Mode and dosage of the agent B. The type of microorganisms present C. Temperature and pH D. The number of microorganisms E. All of the choices will influence the action.
Dogs scent-mark by defecating and urinating in an area, while cats scent-mark by rubbing against objects. Both of these increase the animals level of fitness and are examples of
A. sexual selection. B. altruism. C. territoriality. D. foraging.