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35. Why is Lamb A considered to be a clone of Sheep A?
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
30. In the pedigree on your study guide, is the trait dominant or recessive? How do you know?
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
If brown is the dominant color in rabbits, what are the genotypes of homozygous brown and heterzygous brown rabbits?
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
31. True or False: The X and Y chromosome are known as sex chromosomes because they determine an individuals sex
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
34. c. A heterozyous is crossed with a homozygous recessive. What are the possible phenotypes?
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
34. c. A heterozyous is crossed with a homozygous recessive. What are the possible genotypes?
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
32. A half filled in shape on a pedigree represents a...
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
34. a. A purebred tall is crossed with a hybrid. What are the possible genotypes?
homozygous brown: bb; heterozygous brown: Bb
a carrier of the trait
Lamb A contains identical DNA to Sheep A
50% Tall; 50% short
True
recessive because it does not show up in every generation
50% TT; 50% Tt; 0% tt
0% TT; 50% Tt; 50% tt
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