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Genetics
Test Description: A review of transcription, translation, DNA replication and Mendelian genetics.
Instructions: Answer all questions to get your test result.
1) RNA does not have ___________ , but has ___________.
A
uracil (U), thymine (T)
B
nucleus, double-helix
C
thymine (T), uracil (U)
D
thymine (T), codon
2) When the ______ and ______ match up, the amino acid is released to form a polypeptide chain
A
RNA, DNA
B
pyramidines, purines
C
translation, a mutation
D
codon, an anticodon
3) Translation takes place in the:
A
mitochondria.
B
nucleus.
C
codon.
D
cytoplasm.
4) One of translation's goal is to make a(n):
A
Protein
B
mRNA
C
Purine.
D
Codon.
5) These are the building blocks of protein.
A
Amino Acids
B
Nucleotides
C
Sugars
D
Translations
6) Three-base sequence in a tRNA molecule base that pairs with a complementary codon in mRNA is a(n)
A
anticodon
B
codon
C
initiation
D
start codon
7) How many nucleotides make up a codon?
A
2
B
1
C
4
D
3
8) What are the basic pairing rules for DNA?
A
A-C, T-G
B
A-U, C-G
C
A-T, G-C
D
A-G, T-C
9) DNA molecule is made up of how many strands?
A
0
B
3
C
1
D
2
10) DNA is duplicated:
A
in any direction.
B
from translation to transcription.
C
from 5’ to 3’.from 3’ to 5’.
D
from 5’ to 3’.
11) Each duplicated DNA molecule consists of one old strand and one new strand.
A
False
B
True
12) This enzyme unwinds the DNA.
A
DNA polymerase
B
Helicase
C
Promoter
D
Intron
13) If the sequence of bases in the coding strand of a DNA is TAGC, then the sequence of bases in the mRNA will be:
A
UAGC
B
AUCG
C
ATCG
D
TAGC
14) In the use of a Punnett square for genetic results of crossing individuals,
A
all different kinds of sperm are lined up either horizontally or vertically.
B
All of the choices are correct.
C
the results show the offspring's expected genotypes.
D
all different kinds of eggs are lined up either horizontally or vertically
15) Gene with alternate forms is:
A
a locus.
B
an allele.
C
always dominant.
D
a Punnett’s square.
16) Our physical trait:
A
is homozygous.
B
is the locus.
C
is the phenotype.
D
is the genotype.
17) Which of the following crosses would always result in offspring that only display the dominant phenotype?
A
both TT x tt and TT x TT
B
TT x TT
C
TT x tt
D
Tt x Tt
18) A classic example of codominance is:
A
colorblindness.
B
ABO blood groups in humans.
C
height in garden peas.
D
pink flowers in heterozygous flowers.
19) This enzyme joins Okazaki fragments to form a continuous strand
A
DNA polymerase
B
DNA ligase
C
DNA helicase
D
RNA primase
*select an answer for all questions
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