Genetics Test 3
Version A
Old Test Objectves:
Chromosome Project Objectives:
New Objectives:
Name: _____________________________
3
2
8
4
15
23
5
16
24
Date: _________________ Per.:_________
9 ( do not skip)
17
18
19
25
26
27
28
29
For all crosses on this test (15, 16, 19, 23, 25) use the genotypes shown below:
Mother
Father
2) Fill in the blanks using these vocabulary words: Chromosome(s), Gene(s), Allele(s), DNA
2a) The whole thing represents one __________________________
2b) This part of it represents one _________________________
2c) These different forms, indicated by a capital and lowercase letter, represent different ________________________
2d) All of these things are made of ___________________________
4) Genes XA, S, and R make proteins for fur color. Correctly fill out the missing phenotypes on all 3 charts below.
15) Co-dominance
Genotypes
Phenotypes
A A
S S
Blue
SA SB
[__________]
SB SB
Gray
16) Incomplete dominance
Genotypes
Phenotypes
RR
Red
Rr
[__________]
rr
White
19) X-linked
Genotypes
Phenotypes
A A
X X
[__________]
XA Xa
Orange
Xa Xa
White
A
X Y
Orange
Xa Y
[__________]
15) After filling in the genotype in the co-dominance chart above, complete a Punnett square for gene S, using the
genotypes shown at the beginning of the test, and list the genotypic and phenotypic ratios (or fractions or percents).
16) Follow the same directions as 15, using gene R instead.
19) Follow the same directions as 15, using gene XA instead.
Correctly complete at least one of these
(15, 16, or 19) for objectives 3 and 5
17a) Having more than one gene for the same trait is called _______________
17b) One example in humans of a trait that is controlled by more than one gene is ____________________
23) Dihybrid Cross: Complete a Punnett square for genes A and B using the genotypes shown at the beginning of the
test, and list the genotypic ratios (or fractions or percents). You do not need phenotypic ratios for this question.
25) Linked Genes: Complete a Punnett square for genes A and E using the genotypes shown at the beginning of the test,
and list the genotypic ratios (or fractions or percents). You do not need phenotypic ratios for this question.
Vocab Matching: For questions 8, 24, 26, and 18; match two letters to each vocabulary word. Write the letters in the
brackets below each word. Each answer, a through h, will all be used only once, and all of them will be used.
8) Law of Segregation
[
] [
]
24) Law of Independent Assortment
[
] [
]
26) Recombination
[
] [
]
18) Epistasis
[
] [
]
a) White spots on a calico cat are an example of this word.
b) When a pair of chromosomes separate into their own cells, they don’t affect where the other chromosomes go.
c) This is caused by crossing over
d) This word is only used for genes on different chromosomes. It is not true for genes on the same chromosome.
e) Homologous chromosomes separate, so you can get one from each parent.
f) One gene affects how the other genes are expressed.
g) Down Syndrome (having 3 copies of chromosome 21) is an example of this not working properly.
h) Getting new combinations of alleles, different from combinations on the parents’ chromosomes.
27) Using the following recombination data, determine the order of these genes on a chromosome (show your work):
Genes P and M recombine 10% of the time
Genes M and Q recombine 20% of the time
Genes P and Q recombine 30% of the time
Genes J and Q recombine 10% of the time
Genes P and J recombine 20% of the time
28) Using the above recombination data, determine which of these gene pairs (below) are closest together and which
are farthest apart, then explain how you know. Gene pairs: [P and M], [M and Q], [P and Q]
9) A female is born with attached earlobes, which is the recessive phenotype. Using Punnett Square(s), or some other
diagram, list all of the possible genotypic combinations of her parents. For each combination, what is the probability
(%) that you will get the recessive phenotype.
29) What is the “mode of inheritance” for the shaded trait in the pedigree below? Is it autosomal dominant, autosomal
recessive, or sex-linked recessive? Support your answer using at least 2 pieces of evidence from the pedigree.
Genetics Test 3
Version B
Old Test Objectves:
Chromosome Project Objectives:
New Objectives:
Name: _____________________________
3
2
8
4
15
23
5
16
24
Date: _________________ Per.:_________
9 ( do not skip)
17
18
19
25
26
27
28
29
For all crosses on this test (15, 16, 19, 23, 25) use the genotypes shown below:
Mother
Father
2) Fill in the blanks using these vocabulary words: Chromosome(s), Gene(s), Allele(s), DNA
2a) The whole thing represents one __________________________
2b) This part of it represents one _________________________
2c) These different forms, indicated by a capital and lowercase letter, represent different ________________________
2d) All of these things are made of ___________________________
4) Genes XA, S, and R make proteins for fur color. Correctly fill out the missing phenotypes on all 3 charts below.
15) Co-dominance
Genotypes
Phenotypes
A A
S S
Black
SA SB
[__________]
SB SB
Yellow
16) Incomplete dominance
Genotypes
Phenotypes
RR
Red
Rr
[__________]
rr
White
19) X-linked
Genotypes
Phenotypes
A A
X X
[__________]
XA Xa
Brown
Xa Xa
White
A
X Y
Brown
Xa Y
[__________]
15) After filling in the genotype in the co-dominance chart above, complete a Punnett square for gene S, using the
genotypes shown at the beginning of the test, and list the genotypic and phenotypic ratios (or fractions or percents).
16) Follow the same directions as 15, using gene R instead.
19) Follow the same directions as 15, using gene XA instead.
Correctly complete at least one of these
(15, 16, or 19) for objectives 3 and 5
17a) Having more than one gene for the same trait is called _______________
17b) One example in humans of a trait that is controlled by more than one gene is ____________________
23) Dihybrid Cross: Complete a Punnett square for genes A and B using the genotypes shown at the beginning of the
test, and list the genotypic ratios (or fractions or percents). You do not need phenotypic ratios for this question.
25) Linked Genes: Complete a Punnett square for genes A and E using the genotypes shown at the beginning of the test,
and list the genotypic ratios (or fractions or percents). You do not need phenotypic ratios for this question.
Vocab Matching: For questions 8, 24, 26, and 18; match two letters to each vocabulary word. Write the letters in the
brackets below each word. Each answer, a through h, will all be used only once, and all of them will be used.
8) Law of Segregation
[
] [
]
18) Epistasis
[
] [
]
24) Law of Independent Assortment
[
] [
]
26) Recombination
[
] [
]
a) This word is only used for genes on different chromosomes. It is not true for genes on the same chromosome.
b) Homologous chromosomes separate, so you can get one from each parent.
c) One gene affects how the other genes are expressed.
d) Down Syndrome (having 3 copies of chromosome 21) is an example of this not working properly.
e) Getting new combinations of alleles, different from combinations on the parents’ chromosomes.
f) White spots on a calico cat are an example of this word.
g) When a pair of chromosomes separate into their own cells, they don’t affect where the other chromosomes go.
h) This is caused by crossing over
27) Using the following recombination data, determine the order of these genes on a chromosome (show your work):
Genes P and M recombine 10% of the time
Genes M and Q recombine 20% of the time
Genes P and Q recombine 30% of the time
Genes J and Q recombine 10% of the time
Genes P and J recombine 20% of the time
28) Using the above recombination data, determine which of these gene pairs are closest together and which are
farthest apart, then explain how you know. Gene pairs: [P and M], [M and Q], [P and Q]
9) A female is born with attached earlobes, which is the recessive phenotype. Using Punnett Square(s), or some other
diagram, list all of the possible genotypic combinations of her parents. For each combination, what is the probability
(%) that you will get the recessive phenotype.
29) What is the “mode of inheritance” for the shaded trait in the pedigree below? Is it autosomal dominant, autosomal
recessive, or sex-linked recessive? Support your answer using at least 2 pieces of evidence from the pedigree.
Genetics Test 3
Version C
Old Test Objectves:
Chromosome Project Objectives:
New Objectives:
Name: _____________________________
3
2
8
4
15
23
5
16
24
Date: _________________ Per.:_________
9 ( do not skip)
17
18
19
25
26
27
28
29
For all crosses on this test (15, 16, 19, 23, 25) use the genotypes shown below:
Mother
Father
2) Fill in the blanks using these vocabulary words: Chromosome(s), Gene(s), Allele(s), DNA
2a) The whole thing represents one __________________________
2b) This part of it represents one _________________________
2c) These different forms, indicated by a capital and lowercase letter, represent different ________________________
2d) All of these things are made of ___________________________
4) Genes XA, S, and R make proteins for fur color. Correctly fill out the missing phenotypes on all 3 charts below.
15) Co-dominance
Genotypes
Phenotypes
A A
S S
Brown
SA SB
[__________]
SB SB
Orange
16) Incomplete dominance
Genotypes
Phenotypes
RR
Red
Rr
[__________]
rr
White
19) X-linked
Genotypes
Phenotypes
A A
X X
[__________]
XA Xa
Black
Xa Xa
White
A
X Y
Black
Xa Y
[__________]
15) After filling in the genotype in the co-dominance chart above, complete a Punnett square for gene S, using the
genotypes shown at the beginning of the test, and list the genotypic and phenotypic ratios (or fractions or percents).
16) Follow the same directions as 15, using gene R instead.
19) Follow the same directions as 15, using gene XA instead.
Correctly complete at least one of these
(15, 16, or 19) for objectives 3 and 5
17a) Having more than one gene for the same trait is called _______________
17b) One example in humans of a trait that is controlled by more than one gene is ____________________
23) Dihybrid Cross: Complete a Punnett square for genes A and B using the genotypes shown at the beginning of the
test, and list the genotypic ratios (or fractions or percents). You do not need phenotypic ratios for this question.
25) Linked Genes: Complete a Punnett square for genes A and E using the genotypes shown at the beginning of the test,
and list the genotypic ratios (or fractions or percents). You do not need phenotypic ratios for this question.
Vocab Matching: For questions 8, 24, 26, and 18; match two letters to each vocabulary word. Write the letters in the
brackets below each word. Each answer, a through h, will all be used only once, and all of them will be used.
18) Epistasis
[
] [
]
26) Recombination
[
] [
]
24) Law of Independent Assortment
[
] [
]
8) Law of Segregation
[
] [
]
a) This word is only used for genes on different chromosomes. It is not true for genes on the same chromosome.
b) Homologous chromosomes separate, so you can get one from each parent.
c) One gene affects how the other genes are expressed.
d) White spots on a calico cat are an example of this word.
e) When a pair of chromosomes separate into their own cells, they don’t affect where the other chromosomes go.
f) This is caused by crossing over
g) Down Syndrome (having 3 copies of chromosome 21) is an example of this not working properly.
h) Getting new combinations of alleles, different from combinations on the parents’ chromosomes.
27) Using the following recombination data, determine the order of these genes on a chromosome (show your work):
Genes P and M recombine 10% of the time
Genes M and Q recombine 20% of the time
Genes P and Q recombine 30% of the time
Genes J and Q recombine 10% of the time
Genes P and J recombine 20% of the time
28) Using the above recombination data, determine which of these gene pairs are closest together and which are
farthest apart, then explain how you know. Gene pairs: [P and M], [M and Q], [P and Q]
9) A female is born with attached earlobes, which is the recessive phenotype. Using Punnett Square(s), or some other
diagram, list all of the possible genotypic combinations of her parents. For each combination, what is the probability
(%) that you will get the recessive phenotype.
29) What is the ““mode of inheritance” for the shaded trait in the pedigree below? Is it autosomal dominant, autosomal
recessive, or sex-linked recessive? Support your answer using at least 2 pieces of evidence from the pedigree.