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