Which statement best describes a polygenic trait?
(1 point)
A polygenic trait is only controlled by
multiple environmental factors.
A polygenic trait is only controlled by one
gene and influenced by the environment.
A polygenic trait is only controlled by one
environmental factor.
A polygenic trait is controlled by multiple
genes and influenced by the environment.
A polygenic trait is controlled by multiple genes and influenced by the environment.
An animals weight is determined by: (1 point)
multiple genes and environmental factors
a single gene only
multiple genes only
both a single gene and environmental
factors
An animal's weight is determined by multiple genes and environmental factors.
Which statement best describes trait distribution?
(1 point)
Distribution describes the different traits
that are found in a species.
Distribution describes how individuals in a
population are spread across their habitat.
Distribution describes how the variation in
traits is spread across a population.
Distribution describes the different traits
that are found in a population.
Distribution describes how the variation in traits is spread across a population.
Use the table to answer the following question.
Grade 10-12
Height
Range
55-
59
60-
64
65-
69
70-
74
Frequency 4 9 8 4
A statistician collects the following height data in inches
for a school district. The statistician says that it is a
normal distribution. How did they draw this conclusion?
(1 point)
The frequencies for the first and last
height range are the same.
When graphed, the data creates a
straight line.
The frequencies for each height range
are different.
When graphed, the data creates a bell
curve.