BIOL-1033 Exam #4
1. The human blood type AB in which both the A antigen and the B antigen
are found embedded in the blood cells is an example of: Codominance
2. An X-linked gene is: a gene on the X chromosome
3. A man and a woman are both heterozygous carriers for the recessive allele
that causes cystic fibrosis. What is the probability that they will have an
offspring who has cystic fibrosis?: 25%
4. All the offspring of a cross between a red-flowered plant and a white
flowered plant have pink flowers. This means that the allele for red flowers
is to the allele for white flowers.: incompletely dominant
5. The origin of mitochondria in a eukaryotic cell is explained by:
Endosymbiosis of an aerobic bacterium
6. Which would be most likely to be fossilized?: a common thick-shelled
crustacean
7. You uncovered a fossil that you suspect is around 100 million years old.
Which of the radioisotope pairs in the table could you eliminate as an
appropriate choice for radioisotope dating the accompanying rock?:
Carbon-14/Nitrogen-14
8. The Earth's atmosphere has changed a lot over the past 4 billion years. One
big change was due to photosynthetic organisms. Their photosynthesis
increased the amount of what atmospheric gas?: Oxygen (O2)
9. The first living cells were most likely: Anaerobic prokaryotes
10. The process by which the major land masses have shifted their
positions, changed shapes and separated from each other, is known as:
Continental drift (plate tectonics)
11. The likelihood of allopatric speciation increases when a splinter
population is __________ and __________ the broader range of the
species.: Small ; isolated from
12. Today there are 54 different honeycreepers in Hawaii. The ancestor of
the honeycreepers was the European rosefinch. The evolution of many
species of honeycreeper is the result of: Adaptive radiation
13. During the Beagle journey, Darwin visited islands, allowing him to
compare island species with continental species. In terms of framing his
theory of evolution, why was this significant?: Because the island species
had both similarities to their continental ancestors and unique adaptations to their
island environments.
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1. The human blood type AB in which both the A antigen and the B antigen
are found embedded in the blood cells is an example of: Codominance
2. An X-linked gene is: a gene on the X chromosome
3. A man and a woman are both heterozygous carriers for the recessive allele
that causes cystic fibrosis. What is the probability that they will have an
offspring who has cystic fibrosis?: 25%
4. All the offspring of a cross between a red-flowered plant and a white
flowered plant have pink flowers. This means that the allele for red flowers
is to the allele for white flowers.: incompletely dominant
5. The origin of mitochondria in a eukaryotic cell is explained by:
Endosymbiosis of an aerobic bacterium
6. Which would be most likely to be fossilized?: a common thick-shelled
crustacean
7. You uncovered a fossil that you suspect is around 100 million years old.
Which of the radioisotope pairs in the table could you eliminate as an
appropriate choice for radioisotope dating the accompanying rock?:
Carbon-14/Nitrogen-14
8. The Earth's atmosphere has changed a lot over the past 4 billion years. One
big change was due to photosynthetic organisms. Their photosynthesis
increased the amount of what atmospheric gas?: Oxygen (O2)
9. The first living cells were most likely: Anaerobic prokaryotes
10. The process by which the major land masses have shifted their
positions, changed shapes and separated from each other, is known as:
Continental drift (plate tectonics)
11. The likelihood of allopatric speciation increases when a splinter
population is __________ and __________ the broader range of the
species.: Small ; isolated from
12. Today there are 54 different honeycreepers in Hawaii. The ancestor of
the honeycreepers was the European rosefinch. The evolution of many
species of honeycreeper is the result of: Adaptive radiation
13. During the Beagle journey, Darwin visited islands, allowing him to
compare island species with continental species. In terms of framing his
theory of evolution, why was this significant?: Because the island species
had both similarities to their continental ancestors and unique adaptations to their
island environments.
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