Western Sierra 2010-2011
GENETICS TEST
LIFE SCIENCE
11/4/10
Essential Standard and Cut Points
Students understand the relationships between DNA, genes, chromosomes, alleles, and traits and can use genetics tools to
understand outcomes and patterns in trait inheritance.
Maximum: 35
Advanced (4): 30
Proficient (3): 25
Basic (2): 20
Vocabulary
For each term on the left, match it to a concept on the right:
1)
2)
3)
4)
5)
Heterozygous
Heredity
Purebred
Recessive
Gene
6)
7)
8)
9)
10)
Sexual reproduction
Diploid cell
Genotype
Phenotype
Co-dominance
11)
12)
13)
14)
15)
Karyotype
Pedigree
Gene Therapy
Cloning
Genetic Engineering
a)
b)
c)
d)
e)
A sequence of DNA that codes for a certain trait.
A homozygous inheritance from similar parents.
An allele which is typically expressed less than half the time.
Having one of each allele.
The overall concept that traits are inherited from your parents.
a)
b)
c)
d)
e)
a)
b)
c)
d)
e)
The set of alleles an organism received.
A cell with paired chromosomes.
A phenotype where both alleles are expressed.
Offspring inherit one chromosome from each parent.
No match.
A family history tracing phenotype expression.
Replacing sick DNA with healthy DNA in each cell.
Reproduction using DNA identical to the parent.
Splicing DNA into a bacteria cell to do something useful.
Arranging chromosomes or DNA slices to document them.
Punnett Squares
16) A cross between a homozygous recessive and a homozygous dominant parent will produce what percentage of
homozygous recessive offspring?
a) 100%
b) 75%
c) 50%
d) 25%
e) 0%
17) Sally with blue eyes and Mike with brown eyes have many exclusively brown-eyed children. Mike definitely has
the following genotype (where B codes for Brown and b codes for blue):
a) BB
b) Bb
c) bb
d) None
e) Cannot be determined
18) 25% of children from a particular pairing come out with a particular phenotype. The trait is definitely:
a) Dominant
b) Co-dominant c) Recessive d) Sex-linked e) Cannot be determined
Western Sierra 2010-2011
19)
a)
b)
c)
d)
e)
GENETICS TEST
LIFE SCIENCE
11/4/10
A co-dominant di-hybrid cross is genetically the most interesting because:
It produces the least diverse group of offspring.
It is related to fatal mutations.
The offspring do not necessarily have the phenotype of either parent.
The ‘affected’ phenotype skips generations.
None of the above.
20) The following Punnett Square pictures which groups of parents?
a) A homozygous and a heterozygous parent.
b) 25% homozygous dominant, 50% heterozygous, 25%
homozygous recessive parents.
c) Two hybrid parents.
d) Two co-dominant parents.
e) None of the above.
21) In the crossing below, if trait A is dominant and trait B is co-dominant, the chance of an offspring that is
recessive for A and dominant for B is:
a) 9/16
b) 3/16
c) 5/16
d) 1/16
e) 4/16
Western Sierra 2010-2011
GENETICS TEST
Pedigrees
22) The following pedigree most
likely expresses a _____ allele:
a) Sex-linked recessive
b) Dominant
c) Recessive
d) Co-dominant
23) The following pedigree most
likely expresses a _____ allele:
a) Sex-linked recessive
b) Sex-linked dominant
c) Dominant/recessive
d) Co-dominant
24) The following pedigree most
likely expresses a _____ allele:
a) Sex-linked recessive
b) Sex-linked dominant
c) Dominant/recessive
d) Co-dominant
25) The following pedigree most likely
expresses a _____ allele:
a) Sex-linked recessive
b) Sex-linked dominant
c) Dominant/recessive
d) Co-dominant
LIFE SCIENCE
11/4/10
Western Sierra 2010-2011
GENETICS TEST
LIFE SCIENCE
11/4/10
26) The following pedigree most likely
expresses a _____ allele:
a) Sex-linked recessive
b) Dominant
c) Recessive
d) Co-dominant
Mutations, Genetic Topics, DNA and Cell Division Review
27) A mutation which is caused by a chemical such as charged-up chlorine bonding to DNA and thereby rearranging
it is called:
a) Transcription Error
b) Cross-over mutation
c) Duplication Error
d) Radiation
e) Oxidation
28)
a)
b)
c)
d)
e)
During meiosis, when chromosomes become tangled, break off, and reattach this causes what type of mutation?
Transcription Error
Cross-over mutation
Duplication Error
Radiation
Oxidation
29)
a)
b)
c)
d)
e)
An embryo with a mutation for an extra 6th chromosome:
Has hemophilia
Has Down Syndrome
Has cystic fibrosis
Will not survive
Will be phenotypically normal
30)
a)
b)
c)
d)
e)
An organism which has the same genes as the organism that produced it is called a:
Hybrid
Clone
Inbred
Mutant
Purebred
Western Sierra 2010-2011
31)
a)
b)
c)
d)
e)
GENETICS TEST
LIFE SCIENCE
11/4/10
Height in humans is an example of a trait that is controlled by:
A single gene with two alleles
A single gene with multiple alleles
Many genes
Environmental factors only
None of the above.
32) Purebred organisms typically:
a) Are very healthy with many common, dominant traits.
b) Have few defining traits relative to the rest of their species.
c) Have more homozygous recessive genetic disorders.
d) Are the result of hybridization.
e) Are the result of genetic engineering.
33) A DNA sequence that is 36 nucleic acids long and contains 20 “A” nucleic acids has how many “G” nucleic acids?
a) 36
b) 12
c) 20
d) 16
e) 108
34) A section of DNA is coded GCTTAA. The tRNA is therefore:
a) CGAATT
b) GCTTAA
c) CGA and ATT
d) GCU and UAA
e) None of the above
35) Which of the following is the first step in the formation of normal cell in an organism that has eight
chromosomes?
a) The two chromatids of each chromosome separate.
b) Chromosome pairs line up next to each other in the center of the cell.
c) The DNA in the eight chromosomes is copied.
d) The chromatids move apart, producing cells with four chromosomes each.
e) The cell divides in the process known as cytokinesis.
Western Sierra 2010-2011
Answer Key
1) d
2) e
3) b
4) c
5) a
6) d
7) b
8) a
9) e
10) c
11) e
12) a
13) b
14) c
15) d
16) e
17) a
18) c or d
19) c
20) c
21) d
22) c
23) c
24) b
25) d
26) c
27) e
28) b
29) d
30) b
31) c
32) c
33) d
34) d
35) c
GENETICS TEST
LIFE SCIENCE
11/4/10