One secondary spermatocyte ultimately produces __________ mature sperm
a. 1
b. 2
c. 4
d. 8
e. Cannot be determined.
B
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Which of the following do I need to amplify the DNA for gene X and not for gene Y?
a. Some prior knowledge of the sequence of gene X so appropriate primers can be designed. b. a heat-stable DNA polymerase c. restriction endonucleases that cut gene X and not gene Y d. plasmid vectors that have multiple antibiotic resistance genes. e. A cDNA library and access to probes for gene X
The location of a gene on a chromosome is the ____
a. genotype b. phenotype c. locus d. allele e. histone
You conduct an experiment in which you add increasing amounts of substrate to an enzyme solution
and then measure the resulting reaction rate. You graph your results, plotting the rate of the reaction on the Y-axis versus substrate concentration on the X-axis. What do you conclude from your graph? a. The reaction rate is directly proportional to substrate concentration. b. The reaction rate is independent of substrate concentration. c. The reaction rate increases but then decreases, forming a bell-shaped curve. d. The reaction rate decreases with increasing substrate concentration. e. The reaction rate increases with increasing substrate concentration up to a point, above which the rate remains constant.
Why can flowers be brought "into bloom" out of season by changing the duration of light and darkness?
What will be an ideal response?