A graduate student has been assigned the task of preparing a "cDNA library" of a microbe. He will need a vector, restriction enzymes and (CRISPR-Cas9/reverse transcriptase/Taq polymerase).
What will be an ideal response?
reverse transcriptase
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Which of the following mutations would be most likely to have a harmful effect on an organism?
A) a nucleotide-pair substitution B) a deletion of three nucleotides near the middle of a gene C) a single nucleotide deletion in the middle of an intron D) a single nucleotide deletion near the end of the coding sequence E) a single nucleotide insertion downstream of, and close to, the start of the coding sequence
Which of the following groups of animals does NOT exhibit a "double circulation" and four-chambered hearts?
A. mammals B. birds C. crocodilians D. snakes E. All of the groups listed exhibit a complete double circulation.
Reproductive success of an organism is best measured by its
A) fitness. B) ability to attract a mate. C) number of offspring that survive to reproduce. D) life span.
In a general sense, ________ refers to short term environmental conditions, and ________ refers to long term environmental conditions
Fill in the blank(s) with correct word