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Biology Final Exam Review
Test Description: Biology Key concepts Final Exam Review
Instructions: Answer all questions to get your test result.
1) A recessive trait
A
is never expressed.
B
Can disappear after several generations.
C
Can only be expressed if both recessive traits are present
D
Can only be expressed in the presence of a dominat trait
2) A karyotype
A
is never used to determine the sex of an individual.
B
Shows autosome chromosomes only.
C
shows a map of chromosomes.
D
only shows the female chromosomes.
3) Genetic diversity in prokaryotes is primarily due to
A
the mixing of DNA during fertilization.
B
mutations in RNA.
C
the mixing of DNA during binary fission.
D
mutations in DNA.
4) Human females produce egg cells that have
A
one X chromosome or one Y chromosome.
B
one X chromosome.
C
two Y chromosomes.
D
two X chromosomes.
5) Sex-linked genes are located on
A
the Y chromosomes only
B
the autosomal chromosomes.
C
both on the X and Y chromosome
D
the X chromosomes only.
6) Human males have
A
one X chromosome only.
B
two Y chromosomes.
C
one X and one Y chromosome.
D
two X chromosomes
7) The formation of a Barr body inactivates
A
one whole X chromosome in a female cell.
B
one whole Y chromosome in a male cell.
C
half of the genes on the X chromosome in a female cell.
D
one gene on one X chromosome in a male cell.
8) A mutation that involves one or a few nucleotides ic called
A
an inversion.
B
a translocation.
C
a point mutation.
D
a mutagen.
9) What happens when a piece of DNA is missing?
A
Genetic information is lost.
B
Genetic information is transmitted.
C
Genetic information is copied.
D
Genetic information is stored.
10) What happens during translation?
A
The cell uses a messenger RNA code to make protein
B
Copies of DNA molecules are made.
C
Transfer RNA is made from a messenger RNA code.
D
Messenger RNA is made from a DNA code.
*select an answer for all questions
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