Because the mechanisms of the origin of life left no record, what would be the best approach to solving the mystery of the origin of life?
a. Identify the sequence of evolutionary events leading to the first life-form on Earth.
b. Using a mathematical approach, determine the probability of rare evolutionary events occurring.
c. Assume that life evolved in a series of steps with sharp boundaries and attempt to identify each step.
d. Develop a hypothetical scenario and conduct laboratory investigations to determine if the scenario is chemically and biologically possible and plausible.
e. Assume that life on Earth arrived from space and work forward.
Ans: d. Develop a hypothetical scenario and conduct laboratory investigations to determine if the scenario is chemically and biologically possible and plausible.
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________-driven promoters do not contain TATA boxes or BREs.
Fill in the blank(s) with the appropriate word(s).
DNA duplication occurs during
a. interphase. b. prophase I. c. prophase II. d. interkinesis.
The first organisms used in recombinant DNA technology were ____________________. Fill in the blank(s) with the appropriate word(s)
Genes contain instructions for assembling
a. proteins b. nucleosomes c. operons d. mutagens