AnswersPA Human Anatomy Physiology A 2026-2027 SMITH ICAnalyzing Evidence

Analyzing Evidence — Unit test Answers

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Dr. Katherine Pollard, a biostatistical researcher, recently changed the method that she used to compare human and chimpanzee DNA. Her research showed that the differences between the two species’ DNA are in segments called switches, which turn certain genes on or off. What is the most likely outcome of Dr. Pollard’s research?

A
Other scientists will repeat her analysis and this may lead to changes in theories.
B
The laws of segregation and independent assortment will change.
C
Dr. Pollard will change experimental methods and repeat the study.
D
The hypothesis will be rewritten to match the outcome of the study.
22
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Line graphs that indicate time along the x-axis can be used to predict what would happen to dependent variables in an experiment at a later point in time

A
only if the existing line shows an upward trend.
B
only if the existing line shows a downward trend.
C
if a new variable was introduced to the experiment.
D
if the experiment continued under the same conditions.
23

Which most accurately describes the basis of the scientific method?

A
a path of clearly defined steps that must be followed in a particular order
B
a possible answer to a scientific question based on knowledge or research
C
the recipe for how to conduct an experiment that must be followed precisely
D
the process of hypothesis and testing through which scientific inquiry occurs
24

Dr. Katherine Pollard, a biostatistical researcher, recently changed the method that she used to compare human and chimpanzee DNA. Her research showed that the differences between the two species’ DNA are in segments called switches, which turn certain genes on or off. What is the most likely outcome of Dr. Pollard’s research?

A
Other scientists will repeat her analysis and this may lead to changes in theories.
B
The laws of segregation and independent assortment will change.
C
Dr. Pollard will change experimental methods and repeat the study.
D
The hypothesis will be rewritten to match the outcome of the study.
25

Edward Jenner’s smallpox inoculation experiment was based on his observation that dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?

A
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
B
He tested different existing inoculations to see which one was most effective in preventing smallpox.
C
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
D
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.

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