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Science 9 - Biology Unit - Topic 4 Review
Test Description: Topic 4 Review
Instructions: Answer all questions to get your test result.
1) What is the difference between discrete and continuous variation?
A
Discrete can be a range, whereas continuous only has a few options.
B
Discrete has only direct options, whereas continuous can be a range.
2) What is a dominant characteristic?
A
The characteristic that is expressed if it is present as an allele.
B
The characteristic that is never expressed.
C
The most popular characteristic.
D
The characteristic that is always expressed.
3) What is a mutation?
A
Changes in DNA.
B
Changes in DNA by the environment or mutagens.
C
Changes in DNA by only the environment.
D
Changes in DNA by mutagens.
4) What is an example of a continuous variation?
A
Age
B
Tongue Rolling
C
Height
D
Nose Shape
5) What is an example of a discrete variation?
A
Age
B
Height
C
Tongue Rolling
D
Nose Shape
6) Are all mutations of DNA from the environment?
A
No
B
Yes
C
It can be from various things.
7) What is a mutagen?
A
A chemical.
B
A chemical causing changes in DNA.
C
None of the above.
D
The environment.
8) What is eye color - discrete or continuous?
A
Continuous
B
Discrete
C
Neither
9) What is hair color - discrete or continuous?
A
Continuous
B
Neither
C
Discrete
10) What is the nature vs. nurture debate?
A
The debate around what characteristics of a person are from nature (their environment) or from nurture (born with).
B
The debate around what characteristics of a person are from nature (born with) or from nurture (their environment).
11) Which of the following genotypes are homozygous recessive?
A
pp
B
PP
C
Pp
D
None of the above.
12) Which of the following genotypes are an example of homozygous dominant?
A
None of the above.
B
DD
C
dd
D
Dd
13) Which genotype is an example of heterozygous?
A
None of the above.
B
Qq
C
QQ
D
qq
*select an answer for all questions
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