Explain the basic ideas of natural selection proposed by Charles Darwin

What will be an ideal response?


Darwin's ideas included the following: (1 ) Within a species there is variation, and some of this variation has a genetic basis; (2 ) some individuals have more surviving offspring than do others because their particular inherited characteristics make them better suited to their environment; and (3 ) traits of more successful individuals become more common in the population.

Biology & Microbiology

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What key advantage do emerging technologies, such as MALDI-TOF and next generation sequencing, have over conventional hybridization and amplification techniques?

a. They do not require selection of suspected pathogens prior to testing. b. They do not require expensive instrumen-tation or skilled technicians. c. They eliminate sample preparation steps, such as nucleic acid purification, prior to testing. d. They are readily available in most clinical laboratories. e. All of the above.

Biology & Microbiology

The movement of earthworms is dependent on

a. circular muscles. b. longitudinal muscles. c. hydrostatic skeleton. d. setae. e. all of these.

Biology & Microbiology

Which cellular structure is important in classifying a bacterial species as Gram positive or Gram negative?

a. flagella b. cell wall c. cilia d. glycocalyx

Biology & Microbiology

Which of the following is NOT a pyrimidine?

A. Uracil B. Thymine C. Cytosine D. Adenine

Biology & Microbiology