biological evolution is defined as a change in the ______ of a species over time
number of offspring
genetic makeup
survival rate
number of individuals
genetic characteristics
Which piece of evidence best supports the hypothesis that the evolution of altruistic behavior is driven by kin selection?(1 point)
Responses
A hippo is observed saving an antelope from an attack by an alligator.
A hippo is observed saving an antelope from an attack by an alligator.
A cuckoo bird hides its own eggs in the nest of another bird species.
A cuckoo bird hides its own eggs in the nest of another bird species.
A male gorilla helps protect his offspring from an attack by a tiger.
A male gorilla helps protect his offspring from an attack by a tiger.
A meerkat protects the offspring of its sister from an attack by hawks.
A meerkat protects the offspring of its sister from an attack by hawks.
A meerkat protects the offspring of its sister from an attack by hawks.
Pandas have become specifically adapted to bamboo forests because they depend on the bamboo for food. Pandas also have a very slow reproduction rate. Females are only capable of becoming pregnant during a 24-to-72-hour window once per year, and they typically only give birth to one cub in the wild. Based on this information, if a major environmental catastrophe like a volcanic eruption or meteor strike destroyed all bamboo forests within the panda ecosystem, what will most likely happen to the panda species?(1 point)
Responses
The species will evolve adaptations to eat another food source that is plentiful.
The species will evolve adaptations to eat another food source that is plentiful.
The species will become extinct since it cannot adapt to the changes fast enough.
The species will become extinct since it cannot adapt to the changes fast enough.
The species will migrate to a different location that has more bamboo to eat.
The species will migrate to a different location that has more bamboo to eat.
The species will evolve into a new species that is capable of eating new food.
The species will evolve into a new species that is capable of eating new food.
The species will become extinct since it cannot adapt to the changes fast enough.
What must be true about the population in order for evolution by natural selection to take place?(1 point)
Responses
The population must have genetic variation that leads to differential survival and reproduction.
The population must have genetic variation that leads to differential survival and reproduction.
The population must have a large number of individuals that can reproduce and produce fertile offspring.
The population must have a large number of individuals that can reproduce and produce fertile offspring.
The population must have strong individuals capable of fighting off other populations when threatened.
The population must have strong individuals capable of fighting off other populations when threatened.
The population must have well camouflaged individuals to avoid being eaten by predators.
The population must have well camouflaged individuals to avoid being eaten by predators.
The population must have genetic variation that leads to differential survival and reproduction.
Do mutations always lead to evolution?(1 point)
Responses
Yes, because mutations create adaptations that give a competitive advantage.
Yes, because mutations create adaptations that give a competitive advantage.
Yes, because there would be no change in populations without mutations.
Yes, because there would be no change in populations without mutations.
No, because most mutations lead to death of the organism.
No, because most mutations lead to death of the organism.
No, because some mutations happen in body cells, so they are not passed on.
No, because some mutations happen in body cells, so they are not passed on.
Which statement about correlation and causation is true?(1 point)
Responses
A correlation is never a causation.
A correlation is never a causation.
Correlation sometimes indicates causation.
Correlation sometimes indicates causation.
A correlation is more difficult to establish than a causation.
A correlation is more difficult to establish than a causation.
Correlation always implies c
A correlation is never a causation.
se the scenario to answer the question.
Scientists have found one new fossil that is similar to Archaeopteryx. It is only the second fossil of its kind. It shows an animal that had a long-feathered tail and small teeth, like non-avian dinosaurs. But the animal also had flight feathers and wings, like modern birds. The fossil also shows a fused clavicle bone, which confirms the relationship between birds and dinosaurs because they are the only two groups with this characteristic.
What is true about this scenario?
(1 point)
Responses
It shows evidence of climate change.
It shows evidence of climate change.
It shows evidence of causation.
It shows evidence of causation.
It shows evidence of widespread expression.
It shows evidence of widespread expression.
It shows evidence of evolution.
It shows evidence of evolution.
It shows evidence of evolution.
An amino acid analysis of the DNA polymerase gene in humans determines that the sequence of the active site is: Val-Gly-Thr-Ser-Cys-Pro. Based on this information, which species below would be considered the most evolutionarily related to humans?(1 point)
Responses
Species 1: Gly-Leu-Ser-Thr-Cys-Pro
Species 1: Gly-Leu-Ser-Thr-Cys-Pro
Species 3: Val-Gly-Thr-Ser-Tyr-Pro
Species 3: Val-Gly-Thr-Ser-Tyr-Pro
Species 2: Val-Gly-Phe-Tyr-Asn-Pro
Species 2: Val-Gly-Phe-Tyr-Asn-Pro
Species 4: Leu-Val-Met-Thr-Ty
Species 3: Val-Gly-Thr-Ser-Tyr-Pro
Biology B Semester Exam
23 of 2523 of 25 Items
Question
The following table shows data about the types of fossils found in certain sedimentary rock layers from the surface down to the lowest rock layer (Rock Layer E):
Rock Layer Fossils Found
Surface None
A A1, A2, B2, B3
B B1, B2, B3
C C1, C2, D2, E2, E3
D D1, D2, E2, E3
E E1, E2, E3
Based on this fossil record data, between which two rock layers does there appear to have been a mass extinction event?
(1 point)
Responses
D and E
D and E
C and D
C and D
B and C
B and C
A and B
C and D
Which statement is true about DNA?(1 point)
Responses
DNA cannot provide evidence of evolution.
DNA cannot provide evidence of evolution.
DNA sequences can be analyzed to discover common ancestors.
DNA sequences can be analyzed to discover common ancestors.
DNA sequences can be encoded to create an infinite amount of amino acids.
DNA sequences can be encoded to create an infinite amount of amino acids.
DNA cannot be analyzed in extinct organisms.
DNA cannot be analyzed in extinct organisms.