BIOL-1033 Exam #4
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 - ANSWERCodominance
An X-linked gene is - ANSWERa gene on the X chromosome
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? -
ANSWER25%
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.
- ANSWERincompletely dominant
The origin of mitochondria in a eukaryotic cell is explained by -
ANSWEREndosymbiosis of an aerobic bacterium
, Which would be most likely to be fossilized? - ANSWERa common thick-shelled
crustacean
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? - ANSWERCarbon-14/Nitrogen-14
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? - ANSWEROxygen (O2)
The first living cells were most likely - ANSWERAnaerobic prokaryotes
The process by which the major land masses have shifted their positions, changed shapes
and separated from each other, is known as - ANSWERContinental drift (plate tectonics)
The likelihood of allopatric speciation increases when a splinter population is
__________ and __________ the broader range of the species. - ANSWERSmall ; isolated from
, 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 -
ANSWERAdaptive radiation
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? - ANSWERBecause the island species had both similarities to their continental
ancestors and unique adaptations to their island environments.
Which scenario best illustrates the process of natural selection? (See image to right)
These 3 breeds of dogs are the result of - ANSWERartificial selection ( selective breeding)
What field of study uses geographic distribution of extinct and living species to
determine patterns of evolution? - ANSWERBiogeography
These animals are examples of _________ evolution when animals that are not closely
related come to look like one another superficially because they live in a similar environment. -
ANSWERConvergent
Fundamental similarity in anatomical structure due to descent from a common ancestor
is called - ANSWERhomology
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 - ANSWERCodominance
An X-linked gene is - ANSWERa gene on the X chromosome
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? -
ANSWER25%
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.
- ANSWERincompletely dominant
The origin of mitochondria in a eukaryotic cell is explained by -
ANSWEREndosymbiosis of an aerobic bacterium
, Which would be most likely to be fossilized? - ANSWERa common thick-shelled
crustacean
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? - ANSWERCarbon-14/Nitrogen-14
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? - ANSWEROxygen (O2)
The first living cells were most likely - ANSWERAnaerobic prokaryotes
The process by which the major land masses have shifted their positions, changed shapes
and separated from each other, is known as - ANSWERContinental drift (plate tectonics)
The likelihood of allopatric speciation increases when a splinter population is
__________ and __________ the broader range of the species. - ANSWERSmall ; isolated from
, 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 -
ANSWERAdaptive radiation
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? - ANSWERBecause the island species had both similarities to their continental
ancestors and unique adaptations to their island environments.
Which scenario best illustrates the process of natural selection? (See image to right)
These 3 breeds of dogs are the result of - ANSWERartificial selection ( selective breeding)
What field of study uses geographic distribution of extinct and living species to
determine patterns of evolution? - ANSWERBiogeography
These animals are examples of _________ evolution when animals that are not closely
related come to look like one another superficially because they live in a similar environment. -
ANSWERConvergent
Fundamental similarity in anatomical structure due to descent from a common ancestor
is called - ANSWERhomology
