BIO 212 Quiz 5 Questions And Answers With Updated
Study Quizzes
House finches were found only in western North America until 1939, when a few individuals were
released in New York City. These individuals established a breeding population and gradually expanded
their range. The western population also expanded its range somewhat eastward, and the two populations
have recently come in contact. If the two forms were unable to interbreed when their expanding ranges
met, it would be an example of ________. ANS allopatric speciation
How are two different species most likely to evolve from one ancestral species? ANS allopathically,
after the ancestral species has split into two populations
The production of sterile mules by interbreeding between female horses (mares) and male donkeys (jacks)
is an example of ________. ANS reduced hybrid fertility
Rank the following in order from most general to most specific.
1. gametic isolation
2. reproductive isolating mechanism
3. sperm-egg incompatibility in sea urchins
4. prezygotic isolating mechanism ANS 2, 4, 1, 3
What happens to the hybrid zone when gene flow is established? ANS Hybrids cease to be formed.
Which attacks chemical bonds, extracting electrons? ANS oxygen
Reinforcement is most likely to occur when ________. ANS hybrids have lower fitness than either
parent population
In the Inquiry Activity "Evolution and Selection," what color of moth was dominant between 1900 and
1950, and why during that time period ANS dark, during this time more pollution colored tree trunks
dark
, According to the concept of punctuated equilibrium, the "sudden" appearance of a new species in the
fossil record means that ________. ANS speciation occurred rapidly in geologic time
You are confronted with a box of preserved grasshoppers of various species that are new to science and
have not been described. Your assignment is to separate them into species. There is no accompanying
information as to where or when they were collected. Which species concept will you have to use?
ANS morphological
Use the following description to answer the question.
In the oceans on either side of the Isthmus of Panama are 30 species of snapping shrimp; some are
shallow-water species, others are adapted to deep water. There are 15 species on the Pacific side and 15
different species on the Atlantic side. The Isthmus of Panama started rising about 10 million years ago.
The oceans were completely separated by the isthmus about 3 million years ago.
In the figure, the isthmus separates the Pacific Ocean on the left (side A) from the Atlantic Ocean on the
right (side B). The seawater on either side of the isthmus is separated into five depth habitats (1-5), with 1
being the shallowest.
In which habitat should one find snapping shrimp most closely related to shrimp that live in habitat A4?
ANS B4
Which reproduced via binary fission? ANS Bacteria
Use the following description to answer the question.
On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated freshwater
ponds that were once united. Currently, some predator-rich ponds have mosquitofish that can swim in
short, fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long
time. When placed together in the same body of water, the two kinds of female mosquitofish exhibit
exclusive breeding preferences.
What is the best way to promote fusion between two related populations of mosquitofish, one of which
lives in a predator-rich pond and the other of which lives in a predator-poor pond? ANS Build a canal
linking the two ponds that permits free movement of mosquitofish, but not of predators.
Two researchers experimentally formed tetraploid frogs by fertilizing diploid eggs from Rana porosa
brevipoda with diploid sperm from Rana nigromaculata. When they mated these tetraploid frogs with
each other, most of the offspring that survived to maturity were tetraploid, with chromosome sets of both
diploid parent species. Based on these results, if this type of tetraploid formed in the wild, what would be
the result? (Reference: Y. Kondo and A. Kashiwagi. 2004. Experimentally induced autotetraploidy and
Study Quizzes
House finches were found only in western North America until 1939, when a few individuals were
released in New York City. These individuals established a breeding population and gradually expanded
their range. The western population also expanded its range somewhat eastward, and the two populations
have recently come in contact. If the two forms were unable to interbreed when their expanding ranges
met, it would be an example of ________. ANS allopatric speciation
How are two different species most likely to evolve from one ancestral species? ANS allopathically,
after the ancestral species has split into two populations
The production of sterile mules by interbreeding between female horses (mares) and male donkeys (jacks)
is an example of ________. ANS reduced hybrid fertility
Rank the following in order from most general to most specific.
1. gametic isolation
2. reproductive isolating mechanism
3. sperm-egg incompatibility in sea urchins
4. prezygotic isolating mechanism ANS 2, 4, 1, 3
What happens to the hybrid zone when gene flow is established? ANS Hybrids cease to be formed.
Which attacks chemical bonds, extracting electrons? ANS oxygen
Reinforcement is most likely to occur when ________. ANS hybrids have lower fitness than either
parent population
In the Inquiry Activity "Evolution and Selection," what color of moth was dominant between 1900 and
1950, and why during that time period ANS dark, during this time more pollution colored tree trunks
dark
, According to the concept of punctuated equilibrium, the "sudden" appearance of a new species in the
fossil record means that ________. ANS speciation occurred rapidly in geologic time
You are confronted with a box of preserved grasshoppers of various species that are new to science and
have not been described. Your assignment is to separate them into species. There is no accompanying
information as to where or when they were collected. Which species concept will you have to use?
ANS morphological
Use the following description to answer the question.
In the oceans on either side of the Isthmus of Panama are 30 species of snapping shrimp; some are
shallow-water species, others are adapted to deep water. There are 15 species on the Pacific side and 15
different species on the Atlantic side. The Isthmus of Panama started rising about 10 million years ago.
The oceans were completely separated by the isthmus about 3 million years ago.
In the figure, the isthmus separates the Pacific Ocean on the left (side A) from the Atlantic Ocean on the
right (side B). The seawater on either side of the isthmus is separated into five depth habitats (1-5), with 1
being the shallowest.
In which habitat should one find snapping shrimp most closely related to shrimp that live in habitat A4?
ANS B4
Which reproduced via binary fission? ANS Bacteria
Use the following description to answer the question.
On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated freshwater
ponds that were once united. Currently, some predator-rich ponds have mosquitofish that can swim in
short, fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long
time. When placed together in the same body of water, the two kinds of female mosquitofish exhibit
exclusive breeding preferences.
What is the best way to promote fusion between two related populations of mosquitofish, one of which
lives in a predator-rich pond and the other of which lives in a predator-poor pond? ANS Build a canal
linking the two ponds that permits free movement of mosquitofish, but not of predators.
Two researchers experimentally formed tetraploid frogs by fertilizing diploid eggs from Rana porosa
brevipoda with diploid sperm from Rana nigromaculata. When they mated these tetraploid frogs with
each other, most of the offspring that survived to maturity were tetraploid, with chromosome sets of both
diploid parent species. Based on these results, if this type of tetraploid formed in the wild, what would be
the result? (Reference: Y. Kondo and A. Kashiwagi. 2004. Experimentally induced autotetraploidy and
