BIO 112 EXAM 1 QUESTIONS WITH CORRECT
ANSWERS
allele - Correct Answers -Evolution is a change in a population's ________ frequency
over generations.
derived from a common ancestral trait - Correct Answers -All homologus anatomical
traits are
- derived from a common ancestral trait
- similar in location
- similar in form
- similar in function
- all of the answer choices are correct
humans and chimpanzees share a relatively recent common ancestor. - Correct
Answers -DNA sequences in many human genes are very similar to the sequences of
corresponding genes in chimpanzees. The most likely explanation for this is that:
- humans evolved from chimpanzees.
- the genes are analogous.
- convergent evolution led to the DNA similarities.
- humans and chimpanzees share a relatively recent common ancestor.
- chimpanzees evolved from humans.
That the length of the feeding beak is an inherited feature. - Correct Answers -A study of
soapberry bugs in Florida showed that populations feeding on fruits of the recently
introduced raintrees had shorter feeding beaks than the populations feeding on the
native balloon vines. Researchers say that the shorter beaks are a change in the bugs
due to natural selection. For this to be evidence of the process of natural selection, what
must be shown to be true?
- That feeding on raintree fruits makes any soapberry bug's beak grow shorter.
- ALL of the other answers are correct.
- That the raintree fruits are more nutritious than the balloon vine fruits.
- That bugs with shorter beaks are healthier than bugs with longer beaks.
- That the length of the feeding beak is an inherited feature.
Some penicillin resistant bacteria were present at the start of treatment, and their
frequency increased due to natural selection. - Correct Answers -After several months
of treating a bacterial infection in a community with penicillin, all new infections of that
type were penicillin resistant. How can this be explained?
, - The penicillin lost potency.
- The bacteria evolved to resist vaccines.
- The bacteria started making penicillin resistant versions of the protein targeted by
penicillin.
- Some penicillin resistant bacteria were present at the start of treatment, and their
frequency increased due to natural selection.
- The infection was acquired from outside of the community.
populations - Correct Answers -The smallest biological units that can evolve are
- individual organisms
- individual genotypes
- individual phenotypes
- species
- populations
convergent - Correct Answers -Evolution is considered ____________ when distantly
related organisms develop similar features from different lineages.
the genetic basis of variation and inheritance - Correct Answers -What was an important
"missing piece" in Darwin's theory of natural selection?
- the genetic basis of variation and inheritance
- the application of the geological gradualism concept to biological processes
- that quantitative variation is common in populations
- the idea that the Earth is of great age....much older than suggested in Genesis
- fossils documenting a succession of organisms over time
a vestigial structure - Correct Answers -Mole rats (Spalax) are entirely fossorial, that is,
they spend their entire lives in underground burrows and runways. These animals have
no external eye, but have very tiny and functionless eyes under the skin. It is believed
that mole rats evolved from a terrestrial rodent with typical and functional mammalian
eyes. The eyes of mole rats are, therefore, an example of:
- inheritance of acquired characteristics
- directional selection
- a vestigial structure
- adaptation
- a discrete character
is a carefully-formulated proposition, based on observations, and supported by an
accumulation of empirical data. - Correct Answers -A scientific theory:
- may incorporate explanations involving processes other than physical phenomena.
- is a potential explanation for a phenomenon.
ANSWERS
allele - Correct Answers -Evolution is a change in a population's ________ frequency
over generations.
derived from a common ancestral trait - Correct Answers -All homologus anatomical
traits are
- derived from a common ancestral trait
- similar in location
- similar in form
- similar in function
- all of the answer choices are correct
humans and chimpanzees share a relatively recent common ancestor. - Correct
Answers -DNA sequences in many human genes are very similar to the sequences of
corresponding genes in chimpanzees. The most likely explanation for this is that:
- humans evolved from chimpanzees.
- the genes are analogous.
- convergent evolution led to the DNA similarities.
- humans and chimpanzees share a relatively recent common ancestor.
- chimpanzees evolved from humans.
That the length of the feeding beak is an inherited feature. - Correct Answers -A study of
soapberry bugs in Florida showed that populations feeding on fruits of the recently
introduced raintrees had shorter feeding beaks than the populations feeding on the
native balloon vines. Researchers say that the shorter beaks are a change in the bugs
due to natural selection. For this to be evidence of the process of natural selection, what
must be shown to be true?
- That feeding on raintree fruits makes any soapberry bug's beak grow shorter.
- ALL of the other answers are correct.
- That the raintree fruits are more nutritious than the balloon vine fruits.
- That bugs with shorter beaks are healthier than bugs with longer beaks.
- That the length of the feeding beak is an inherited feature.
Some penicillin resistant bacteria were present at the start of treatment, and their
frequency increased due to natural selection. - Correct Answers -After several months
of treating a bacterial infection in a community with penicillin, all new infections of that
type were penicillin resistant. How can this be explained?
, - The penicillin lost potency.
- The bacteria evolved to resist vaccines.
- The bacteria started making penicillin resistant versions of the protein targeted by
penicillin.
- Some penicillin resistant bacteria were present at the start of treatment, and their
frequency increased due to natural selection.
- The infection was acquired from outside of the community.
populations - Correct Answers -The smallest biological units that can evolve are
- individual organisms
- individual genotypes
- individual phenotypes
- species
- populations
convergent - Correct Answers -Evolution is considered ____________ when distantly
related organisms develop similar features from different lineages.
the genetic basis of variation and inheritance - Correct Answers -What was an important
"missing piece" in Darwin's theory of natural selection?
- the genetic basis of variation and inheritance
- the application of the geological gradualism concept to biological processes
- that quantitative variation is common in populations
- the idea that the Earth is of great age....much older than suggested in Genesis
- fossils documenting a succession of organisms over time
a vestigial structure - Correct Answers -Mole rats (Spalax) are entirely fossorial, that is,
they spend their entire lives in underground burrows and runways. These animals have
no external eye, but have very tiny and functionless eyes under the skin. It is believed
that mole rats evolved from a terrestrial rodent with typical and functional mammalian
eyes. The eyes of mole rats are, therefore, an example of:
- inheritance of acquired characteristics
- directional selection
- a vestigial structure
- adaptation
- a discrete character
is a carefully-formulated proposition, based on observations, and supported by an
accumulation of empirical data. - Correct Answers -A scientific theory:
- may incorporate explanations involving processes other than physical phenomena.
- is a potential explanation for a phenomenon.
