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