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Genetic Test (Medium)
Test Description: Review for the unit test
Instructions: Answer all questions to get your test result.
1) Two parents are both carriers for a genetic trait that is based on only one gene. This means that their offspring:
A
Have a 25% change of inheriting the trait
B
Cannot have the trait
C
Will all be carrier for the trait
D
Have a 50% change of inheriting the trait
2) DNA fingerprinting can be used for:
A
Identifying a person
B
None of the above
C
Diagnose a genetic disease
D
Both a and b
3) By studying the pedigree on the board, you can conclude that the trait is:
A
Both dominant and recessive
B
Recessive
C
Dominant
D
Co-dominant
4) The offspring of asexual reproduction is identical to the parent except in the case of:
A
A clone
B
Multicellular organisms
C
A genetic mutation
D
Fertilization
5) Assume that a genetic trait is represented by the letter 'a'. Which of the following would most likely be used to represent the recessive condition?
A
None of the above
B
Aa
C
aa
D
AA
6) In the punnett square shown on the board, the empty square should be filled in as:
A
Rr
B
rr
C
RRrr
D
RR
7) In the punnett square, among the offspring, what is the ratio of dominant to recessive for this trait?
A
1 : 3
B
3 : 1
C
1 : 2 : 1
D
2 : 2
8) In the punnett square, the dominant condition of this characteristic is reprsented by:
A
RR and Rr
B
RR, RR, and rr
C
RR and rr
D
Rr and rr
9) In the punnett square, the probability of the trait in offspring is a result of:
A
None of the above
B
Asexual reproduction
C
Both a and b
D
Sexual reproduction
10) A trait can be determined by:
A
One gene
B
The environment
C
Many genes
D
All of the above
11) Which of the following organisms reproduce sexually?
A
Both a and b
B
Plants
C
None of the above
D
Humans
12) Diseases that are inherited are
A
Caused by biruses
B
Caused by genes
C
Caused by environmental factors
D
All of the above
13) Which of the following best describes how the human body is organized, from the largest to smallest structure?
A
Cells, chromosomes, DNA
B
Chromosomes, cells, DNA
C
DNA, chromosomes, cells
D
Cells, DNA, chromosomes
*select an answer for all questions
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