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WorksheetsEnd of Year Genetics
Total questions: 81
Worksheet time: 3625secs
Name
Class
Date
1.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
2.
Which of the following units are repeatedly joined together to form a strand of DNA? (This is the MONOMER of DNA.)
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
3.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
4.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
5.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
6.
What are the 4 nitrogen bases?
a)
adenine, thymine, cytoplasm, and guanine
b)
adenine, thymine cytosine, and guanine
c)
adenine, thymine, cytosine, and gylcerol
d)
adenine, thymine, cytosine, and glucose
7.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
8.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
9.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
10.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
11.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
12.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
13.
Which of the following will only show if two alleles are present?
a)
a dominant trait
b)
a recessive trait
14.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
15.
Which of the following is a phenotype?
a)
Bb
b)
Black fur
16.
What percentage of the offspring in the punnett square are shown as a hybrid?
a)
100%
b)
75%
c)
50%
d)
25%
17.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
18.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
19.
Squidward has light blue skin, and his genotype for this trait is Bb. Which of the following would describe Squidward?
a)
Purebred
b)
Hybrid
c)
Homozygous
d)
Sex-linked
20.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
21.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
22.
W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
a)
none
b)
3/4
c)
1/2
d)
all
23.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
24.
An allele whose trait always shows up in the organism when the allele is present.
a)
recessive allele
b)
dominant allele
c)
hidden allele
d)
present allele
25.
genetic makeup
a)
phenotype
b)
genotype
c)
heterzygous
d)
allele
26.
the chances of something happening
a)
dominant
b)
genotype
c)
phenotype
d)
probability
27.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
28.
father of genetics
a)
Gregor Mendel
b)
James Watson
c)
Dr. Robbins
d)
Francis Crick
29.
Complex molecules which make up structures and carry out functions of an organism
a)
protein
b)
chromosome
c)
DNA
d)
gene
30.
Snapdragon flowers come in red, pink and white. What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Polygenic Inheritance
31.
The sex of an offspring is determined by ______________________.
a)
the mother
b)
the father
c)
the mother and the father
d)
by the environment
32.
Term for homozygous organisms that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
33.
What gamete possibilities could come from this parent's genotype?
a)
AB, AB, aB, aB
b)
Ab, AB, Ab, ab
c)
Ab, Ab, Ab, Ab
d)
AB, aB, ab, aB
34.
In a dihybrid cross
a)
one trait is crossed.
b)
two traits are crossed.
c)
four boxes are needed for the punnett square.
d)
mom's alleles are dominant.
35.
In watermelons, green rinds (G) are dominant to striped rinds (g). What is the genotype of a heterozygous green watermelon?
a)
GG
b)
Gg
c)
gg
d)
green
36.
Which of the following genotypes is homozygous recessive?
a)
RR
b)
Rr
c)
rr
d)
None of the Above
37.
Brown (B) is dominant over white (b). Which genotype is a purebred for brown fur?
a)
BB
b)
Bb
c)
bb
d)
All of the above
38.
What does a Punnett Square help you do?
a)
Determine the ratio of phenotypes
b)
Determine the ratio of genotypes
c)
Predict possible traits the offspring will have
d)
All of the above
39.
Purple is dominant to white. A heterozygous purple flower is crossed with a white flower. What are the genotypes and phenotypes of the offspring?
a)
100% Pp (purple)
b)
50% Pp (purple); 50% pp (white)
c)
75% Pp (purple); 25% pp (white)
d)
25% PP, 50% Pp, 25% pp
75% purple, 25% white
75% purple, 25% white
40.
What is the genotype for this organism?
(E= 3 eyes, e= 1 eye)
(E= 3 eyes, e= 1 eye)
a)
EE
b)
Ee
c)
ee
d)
EE or Ee
41.
Genotype
a)
genetic makeup of an organism
b)
physical characteristics
42.
Phenotype
a)
genetic makeup of an organism
b)
physical characteristics of an organism
43.
______________________ are non-sex chromosomes.
a)
Autosome
b)
Heterosome
c)
Homologous
44.
Gametes are:
a)
body cells
b)
sperm and egg
c)
haploid
d)
46 chromosomes
45.
What mutation has occurred here?
T-G-A-C-C-A
T-G-A-G-C-A
T-G-A-C-C-A
T-G-A-G-C-A
a)
Substitution
b)
Deletion
c)
Insertion
d)
Frameshift
46.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
a)
Substitution
b)
Insertion
c)
Inversion
d)
Translocation
47.
Any change in the sequence of DNA is...
a)
transgenic shift
b)
Single Genotype
c)
Monohybrid Trait
d)
Mutation
48.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
49.
What are the building blocks of proteins call?
a)
DNA
b)
RNA
c)
Ribosomes
d)
Amino Acids
50.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
a)
Substitution
b)
Deletion
c)
Insertion
d)
Inversion
51.
Original DNA: CAT GAT
New DNA: CAT AT
What mutation occurred?
New DNA: CAT AT
What mutation occurred?
a)
deletion
b)
substitution
c)
tranverse
d)
insertion
52.
What is NOT true of Mutations?
a)
They are ALWAYS harmful
b)
Lead to genetic variation
c)
Caused by environmental factors
d)
caused by errors in DNA replication
53.
Why are mutations important?
a)
They bring about genetic variation that is needed for a population to evolve.
b)
They bring about death in the organism in which they develop.
c)
They bring about Hardy-Weinberg equilibrium within a population
d)
They bring about benefits for the individual, but not for the population
54.
Crossing over leads to...
a)
the mixing of entire chromosomes causing genetic variation (or genetic diversity)
b)
A reduction (less) in genetic variation (or genetic diversity)
c)
the mixing of alleles causing genetic variation (or genetic diversity)
d)
the same amount of genetic variation(or genetic diversity)
55.
What is an evolutionary process that explains why polar bears are white to camouflage themselves against a snowy background?
a)
Artificial selection
b)
Mutation
c)
Natural selection
d)
genetic drift
56.
Which process is used to copy DNA in the nucleus?
a)
replication
b)
transcription
c)
translation
57.
Which process is used to make mRNA from the DNA in the nucleus?
a)
transcription
b)
translation
c)
replication
58.
Which RNA bases would pair with TACGAA in transcription?
a)
AUGCUU
b)
ATGCTT
c)
GCATCC
d)
GCAUCC
59.
Where does transcription take place?
a)
nucleus
b)
cytoplasm
c)
ribosome
60.
One difference between DNA and RNA is that....
a)
Only RNA has the base Uracil
b)
only RNA contains the base Thymine
c)
only RNA contains the base Cytocine
d)
only RNA contained the base Guanine
61.
True or false: RNA is double-stranded.
a)
true
b)
false
c)
it depends on the type
62.
Which of these bases does not exist in RNA?
a)
C
b)
T
c)
U
d)
A
63.
A triplet of mRNA is called a
a)
codon
b)
anticodon
c)
amino acid
d)
peptide bond
64.
_______ is made during transcription and ________ is made during translation.
a)
mRNA / a protein
b)
a protein / mRNA
c)
Ribosome / Nucleus
d)
mRNA / tRNA
65.
Which of the following is the sugar found in RNA?
a)
Ribose
b)
Maltose
c)
Deoxyribose
d)
Amylose
66.
Codons contain ______ bases
a)
1
b)
3
c)
6
d)
9
67.
How would the DNA sequence GCTATA be transcribed to mRNA?
a)
GCUAUA
b)
CGATAT
c)
CGAUAU
d)
GCUTUT
68.
In messenger RNA, each codon specifies a particular
a)
nucleotide
b)
enzyme
c)
amino acid
d)
promoter
69.
What is the function of mRNA?
a)
storage of food
b)
prevents mutations
c)
provides energy
d)
carries genetic message
70.
What is the correct amino acid for the following codon:
CAA
CAA
a)
Arg
b)
Met
c)
Gln
d)
Val
71.
What is TRANSCRIPTION?
a)
DNA → mRNA
b)
mRNA → protein
c)
DNA → amino acids
d)
amino acid → sugar
72.
Which is the organelle that makes proteins?
a)
Nucleus
b)
Ribosomes
c)
Rough ER
d)
Golgi Apparatus
73.
X linked recessive traits affect mostly
a)
males
b)
females
c)
both equally
d)
none of the above
74.
Tay Sachs disease is a fatal genetic disorder. Children born with this disorder generally die before they are five years old. A couple has had three children who died of Tay Sachs. About this couple it can safely be assumed that:
a)
any children they have in the future will also die from this disease
b)
they are both heterozygous for the Tay Sachs trait
c)
they are both homozygous for the Tay Sachs trait
d)
one is heterozygous and the other is homozygous for the Tay Sachs trait
75.
What type of karyotype is shown here?
a)
Male with Turner Syndrome
b)
Male with Klinefelter Syndrome
c)
Female with Down Syndrome
d)
Female with Klinefelter Syndrome
76.
If you cross a black chicken with a white chicken, only checkered chickens would be produced. What kind of inheritance pattern does this follow?
a)
Incomplete Dominance
b)
Codominance
77.
A condition in which a person's skin, hair, and eyes lack normal coloring is called
a)
pigment disease
b)
albinism
c)
pink eye syndrome
d)
cystic fibrosis
78.
Based on these results whose blood was found in the blood stain at the crime scene?
a)
Bob
b)
Sue
c)
John
d)
Lisa
79.
What disorder results in uncontrollable bleeding?
a)
hemophilia
b)
Tay-sacs
c)
progeria
d)
cystic fibrous
80.
What disease is characterized by abnormally shaped red blood cells?
a)
hemophilia
b)
sickle cell anemia
c)
phenylketonuria
d)
Huntington's
81.
This karyotype is taken from a ___________.
a)
normal female
b)
normal male
c)
male with Klinefelter's syndrome
d)
female with Turner's syndrome
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