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Genetics
Test Description: Test your knowledge of genetics!
Instructions: Answer all questions to get your test result.
1) An allele whose trait ALWAYS shows up whenever the allele is present is a ___________ allele.
A
Heterozygous
B
Homozygous
C
Recessive
D
Dominant
2) A homozygous wild-type fly with red eyes (RR) mates with a homozygous sepia fly with brown eyes (rr). What are the chances that their offspring will have brown eyes?
A
50%
B
25%
C
100%
D
0%
3) What does it mean to be a carrier of a genetic disease?
A
You have both alleles for the disease and exhibit all symptoms of the illness.
B
You do not have any disease alleles and cannot pass this disease on to your children.
C
Some of your cells carry the allele for the disease and other cells do not.
D
You have one allele for the disease which you can pass on to your children, but you are healthy.
4) Which part of the cell contains the genetic material?
A
Lysosome
B
Nucleus
C
Mitochondria
D
Cell membrane
5) Gregor Mendel is called the "Father of Genetics." What did he discover?
A
He invented the microscope, allowing us to see cells for the first time.
B
He invented a cure for sickle cell disease, which is a genetic disease.
C
He discovered the chemical structure of DNA and won a Nobel Prize.
D
He discovered the basic rules of inheritance by studying pea plants.
6) What is the term for an organism that has two identical alleles for a particular trait?
A
Heterozygous
B
Hybrid
C
Dominant
D
Homozygous
7) Which combination of sex chromosomes would result in a male human being?
A
YY
B
XY
C
XYZ
D
XX
8) How many chromosomes do humans typically have in each body cell?
A
46
B
12
C
23
D
36
9) The base pairs of DNA are adenine, cytosine, guanine, and thymine. Which bases are correctly paired?
A
Adenine binds with thymine.
B
Guanine binds with adenine.
C
Guanine binds with thymine.
D
Adenine binds with cytosine.
10) If your DNA becomes mutated, what might be the result?
A
The mutation could be helpful.
B
The mutation could have no affect.
C
All of the above are possible.
D
The mutation could be harmful.
*select an answer for all questions
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