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Part 4 Genetics Test
Test Description: Fill out your study guide as you work through the games.
Instructions: Answer all questions to get your test result.
1) 29 . In the pedigree on your study guide, is the trait autosomal or sex-linked? Why?
A
sex-linked because only males are effected
B
autosomal because only males are effected
C
autosomal because both males and females are effected
D
sex-linked because both males and females are effected
2) 30. In the pedigree on your study guide, is the trait dominant or recessive? How do you know?
A
recessive because it does not show up in every generation
B
dominant because it does show up in every generation
C
dominant because it does not show up in every generation
D
recessive because it does show up in every generation
3) 31. True or False: The X and Y chromosome are known as sex chromosomes because they determine an individuals sex
A
False
B
True
4) 31. True or False: Males have two X chromosomes
A
False
B
True
5) 31. True or False: All the chromosomes except the sex chromosome are autosomes.
A
True
B
False
6) 31. True or False: Biologists would write 46 XY to indicate a human female
A
True
B
False
7) If brown is the dominant color in rabbits, what are the genotypes of homozygous brown and heterzygous brown rabbits?
A
homozygous: Bb; heterozygous: bb
B
homozygous brown: bb; heterozygous brown: Bb
C
homozygous brown: BB; heterozygous brown: Bb
D
homozygous: Bb; heterozygous: BB
8) 35. Why is Lamb A considered to be a clone of Sheep A?
A
Lamb A is the offspring of Sheep A and Sheep B
B
Lamb A is not a clone; cloning has never happened
C
Lamb A contains DNA that is completely different than Sheep S
D
Lamb A contains identical DNA to Sheep A
9) 24. b. A homozygous dominant and homozygous parents are crossed to create offspring. What are the possible genotypes?
A
50% TT; 25% Tt; 525% tt
B
0% TT; 100% Tt; 0% tt
C
100% TT, 0% Tt, 0% tt
D
50% TT; 0% Tt; 50% tt
10) 34. b. A homozygous dominant and homozygous parents are crossed to create offspring. What are the possible phenotypes?
A
75% tall; 25%short
B
50% tall; 50% short
C
100% tall; 0% short
D
0% tall; 100% short
11) 32. A circle on a pedigree represents ....?
A
a male
B
a recessive trait
C
a female
D
a dominant trait
12) 32. A square on a pedigree represents ....?
A
a female
B
a dominant trait
C
a male
D
a recessive trait
13) 32. A completely filled in shape on a pedigree represents....
A
a person who does not express the trait
B
a person who expresses the trait
C
a female
D
a carrier of a trait
14) 34. a. A purebred tall is crossed with a hybrid. What are the possible genotypes?
A
50% TT; 50% Tt; 0% tt
B
0% TT; 0% Tt; 100% tt
C
75% TT; 25% Tt; 50% tt
D
50% TT; 0% Tt; 50% tt
15) 32. A half filled in shape on a pedigree represents a...
A
a person who expresses the trait
B
a male
C
a person who does not express the trait
D
a carrier of the trait
16) 34. a. A purebred tall is crossed with a hybrid. What are the possible phenotypes?
A
100% Tall; 0% short
B
75% Tall; 25% short
C
0% Tall; 100% short
D
50% Tall; 50% short
17) 34. c. A heterozyous is crossed with a homozygous recessive. What are the possible phenotypes?
A
0% Tall; 100% short
B
100% Tall; 0% short
C
75% Tall; 25% short
D
50% Tall; 50% short
18) 34. c. A heterozyous is crossed with a homozygous recessive. What are the possible genotypes?
A
0% TT; 0% Tt; 100% tt
B
50% TT; 25% Tt; 25% tt
C
50% TT; 0% Tt; 50% tt
D
0% TT; 50% Tt; 50% tt
*select an answer for all questions
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