A pollen grain "knows" when to germinate due
to which of the following?
a. differentiation upon contact with the flower
b. exposure to moisture
c. cell signaling pathways
d. electromagnetic impulses from the flower
e. none of these
C
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Which of the following is NOT a reason why eukaryotic gene regulation is more complicated than
prokaryotic gene regulation?
a. Eukaryotic DNA is sequestered in the nucleus. b. Eukaryotic DNA is complexed with histones. c. Eukaryotic transcription is completed before translation begins. d. Multicellular eukaryotic organisms produce many different types of cells. e. Eukaryotic regulatory sequences are scattered throughout the genome.
Why has Martin Pollak used humans in his studies of kidney disorders?
a. ability to do invasive experiments d. examination of renal phenotypes followed by genetic analysis b. ability to carry out planned matings e. examination of renal genotypes followed by genetic manipulation c. long generation time
What is the genetic code?
a. all of our genes collectively b. all of our base-pairs collectively c. the genetic “words” that code for amino acids d. the genes on DNA that code for proteins e. more than one of these describes the genetic code
Which of the following components of the human eye forms the iris?
What will be an ideal response?