BIO 345 EXAM 2 REVIEW QUESTIONS AND ANSWERS
WQ1: Which of the following are alive? - Answers -Pancreas cell
-Saguaro cactus
-Elephant heart
WQ2: Which of the following is true based on what we discussed? - Answers --
Understanding the origin of life is partially outside the domain of evolutionary biology
-Liquid water may have existed in the universe 'shortly' after the Big Bang (~10 million
years after).
-The origins of life remain highly speculative to scientists.
WQ3: What was the goal of the Miller-Urey Experiment? - Answers --To establish that
life can theoretically be assembled from non-life (organic from inorganic compounds)
WQ4: Why did Spiegelman conduct serial (consecutive) transfers in the experiment
illustrated in the figure? - Answers -Each serial transfer is equivalent to a generation
and thus provided an opportunity to study natural selection over time.
WQ1: Genetic drift pop quiz (review from module 1)
In which of the following situations is genetic drift expected to be the strongest? -
Answers --A population of 10 ringtail cats isolated at the top of Piestawa peak for 300
years
WQ2: In cancer, what is the fitness alignment between the organism and the somatic
cells? - Answers --Misaligned (antagonistic)
WQ3: Considering that you know about natural selection, is organ-level selection likely
to exist and why? - Answers --No, because organs do not reproduce themselves
WQ4: Of what use are fossils in the study of evolutionary biology? (multiple possible) -
Answers --Information on the existence of now-extinct organisms
- Information on the morphology (appearance) and abundance of now-extinct organisms
-Information on the minimum ages (often in millions of years) of groups of organisms
WQ1: What do we know about chloroplast evolution? (multiple answers possible) -
Answers --Chloroplasts likely originated from an ancient endosymbiosis of a
cyanobacterium into a eukaryote
-One generation of an experiment in tobacco plants can result
-Chloroplast DNA, once in the nucleus, is subject to selection at the level of the whole
eukaryotic cell
WQ1: Which of the following are alive? - Answers -Pancreas cell
-Saguaro cactus
-Elephant heart
WQ2: Which of the following is true based on what we discussed? - Answers --
Understanding the origin of life is partially outside the domain of evolutionary biology
-Liquid water may have existed in the universe 'shortly' after the Big Bang (~10 million
years after).
-The origins of life remain highly speculative to scientists.
WQ3: What was the goal of the Miller-Urey Experiment? - Answers --To establish that
life can theoretically be assembled from non-life (organic from inorganic compounds)
WQ4: Why did Spiegelman conduct serial (consecutive) transfers in the experiment
illustrated in the figure? - Answers -Each serial transfer is equivalent to a generation
and thus provided an opportunity to study natural selection over time.
WQ1: Genetic drift pop quiz (review from module 1)
In which of the following situations is genetic drift expected to be the strongest? -
Answers --A population of 10 ringtail cats isolated at the top of Piestawa peak for 300
years
WQ2: In cancer, what is the fitness alignment between the organism and the somatic
cells? - Answers --Misaligned (antagonistic)
WQ3: Considering that you know about natural selection, is organ-level selection likely
to exist and why? - Answers --No, because organs do not reproduce themselves
WQ4: Of what use are fossils in the study of evolutionary biology? (multiple possible) -
Answers --Information on the existence of now-extinct organisms
- Information on the morphology (appearance) and abundance of now-extinct organisms
-Information on the minimum ages (often in millions of years) of groups of organisms
WQ1: What do we know about chloroplast evolution? (multiple answers possible) -
Answers --Chloroplasts likely originated from an ancient endosymbiosis of a
cyanobacterium into a eukaryote
-One generation of an experiment in tobacco plants can result
-Chloroplast DNA, once in the nucleus, is subject to selection at the level of the whole
eukaryotic cell
