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w5QuizGS102part2 - 78688
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Tue 03 May, 2016 (08:58am)
Mon 02 May, 2016
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Which of the following is not true of the punctuated equilibrium theory?
It suggests that subgroups diverge and evolve at about equal and constant rates.
It appears to be well supported by the fossil record.
It was inspired in part by patterns observed in the fossil record.
It suggests that most species undergo little phenotypic change during most of their evolutionary duration.
It proposes that most evolutionary change is concentrated in relatively brief episodes of change.
Chemical compounds secreted by mammals and insects to communicate sexual readiness are called
Which of the following is the best description of an adaptation?
a trait that is currently beneficial to survival
an environmental change that selects for certain traits
a trait that was beneficial to survival in the past
a trait that is of no advantage to survival
a trait that will be beneficial in the future
must have evolved individually in different organisms.
are similar in many organisms.
include the human appendix and wisdom teeth and a snake’s hipbones.
are not found in present-day organisms.
did not have a function when they first developed, but do so today.
As opposed to external fertilization, internal fertilization ensures that
all of the sperm will fertilize eggs.
only the fittest of sperm and egg combinations will survive.
sperm and egg will be released simultaneously.
sperm will be protected until they can unite with the eggs.
the number of sperm and eggs produced will be equal.
This type of selection favors both extremes of the phenotype spectrum within a population.
Up until the late eighteenth and early nineteenth centuries, many naturalists believed that all species of living organism(s) had been created separately and had remained unchanged since the creation. Around that time, scientific research provided findings that were contradictory to that idea. All of the following are findings that contradict the idea of a single creation. Choose the exception.
The limbs of some mammals serve the same purpose but their bone patterns are very different.
The platypus is only found in Australia and the dodo was only found on Madagascar.
Even though the limbs of various mammals carry out different functions (swimming, gliding, running, holding, etc.), the bone patterns are very similar.
As scientists explored more of the earth, they found that different groups of organisms were found in the different regions.
Some fossils of extinct organisms are quite different from living organisms.
On a molecular level, all organisms
have the same bases in DNA and RNA, but different amino acids in proteins.
show no similarities.
use different means of storing genetic information.
have the same bases in DNA and RNA, the same amino acids in proteins, and use the same genetic code.
have the same bases in DNA and RNA, the same amino acids in proteins, but use different genetic codes.
Human chorionic gonadotropin (hCG)
can be used to reveal pregnancy.
is produced by the amnion.
is stored in the ovaries.
is needed to form the placenta.
acts as a hormone signaling menstruation.
Random changes in gene frequency that occur in small populations describes the concept of
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Human Resource Management
Object Oriented Programming
Statistics and Probability