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31. True or False: The X and Y chromosome are known as sex chromosomes because they determine an individuals sex
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
32. A completely filled in shape on a pedigree represents....
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
29 . In the pedigree on your study guide, is the trait autosomal or sex-linked? Why?
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
34. c. A heterozyous is crossed with a homozygous recessive. What are the possible genotypes?
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
30. In the pedigree on your study guide, is the trait dominant or recessive? How do you know?
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
31. True or False: Biologists would write 46 XY to indicate a human female
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
24. b. A homozygous dominant and homozygous parents are crossed to create offspring. What are the possible genotypes?
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
32. A circle on a pedigree represents ....?
autosomal because both males and females are effected
False
recessive because it does not show up in every generation
100% TT, 0% Tt, 0% tt
a female
True
0% TT; 50% Tt; 50% tt
a person who expresses the trait
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