Which of the boxes marked 1-4 correspond to plants that will be true-breeding?
A) 1 and 4 only
B) 2 and 3 only
C) 1, 2, 3, and 4
D) 1 only
E) 1 and 2 only
Answer: A
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At which time period(s) during PCR thermocycling is/are hottest in temperature?
A) during DNA denaturation B) during primer annealing C) during primer extension/elongation D) Both the first and last cycles are hotter in temperature than all other cycles.
Which of the following is a sequencing method that has allowed for miniaturization of the procedure in part by distributing dense clusters of identical DNA on a solid surface?
A. Sanger method B. automated Sanger method C. pyrosequencing method D. Maxam and Gilbert method E. reversible transfection method
What is the most widespread extractive seafloor mining operation?
a. Sulfides b. Sand and gravel c. Salt and water d. Manganese nodules
During the process of gas exchange, gases move ____
a. by active transport b. down electrical gradients c. through membrane channels d. by facilitated diffusion e. down partial pressure gradients