Lesson 5 Terminology Practice Genotype and Phenotype Genotype

Lesson 5 Terminology Practice Genotype and Phenotype

Genotype Aa Phenotype Wing Size

Brown Fur Phenotype

Phenotype

Genotype

Phenotype

Light Coloring Dark coloring Phenotype

x X Genotype

Orange Fur Grey Fur Phenotype

Tt Tt TT Tt t. T tt Genotype

Genotype

Phenotype

Yy Hh SS Genotype

Genotype

Tongue rolling Phenotype

Phenotype Having a Tail

Phenotype

Genotype

Phenotype

Genotype

Phenotype

TT Tt tt Genotype

Genotype

Lesson 5 Terminology Practice Heterozygous and Homozygous

TT Homozygous Tt Heterozygous

x X Heterozygous

UU Homozygous

B B Homozygous

Qq Heterozygous

a. A Heterozygous

n n Homozygous

Pp Heterozygous

ii Homozygous

l. L Heterozygous

Lesson 5 Terminology Practice Dominant and Recessive

Aa Dominant

l. L Recessive

Will the trait be dominant or recessive? hh Recessive

Will the trait be dominant or recessive? Bb Dominant

Will the trait be dominant or recessive? z. Z Dominant

Will the trait be dominant or recessive? bb Recessive

Will the trait be dominant or recessive? mm Recessive

Will the trait be dominant or recessive? QQ Dominant

STOP! For part 2 of genetics packet 44

Lesson 5 Punnet Square Practice

46 Practice Problem 1 - Part 1 Earlobes have two forms. Unattached earlobes are dominant (E). Attached earlobes are recessive (e). The father is heterozygous. Question: What is his genotype? Answer: His genotype is Ee because he is heterozygous. Father E e

47 Practice Problem 1 - Part 2 Mother Question: If the mother has attached earlobes, what is her genotype? Answer: Her genotype must be ee because attached earlobes are recessive. Father E e e e

Practice Problem 1 - Part 3 48 Mother So the father is heterozygous (Ee) The mother is homozygous dominant (ee). Question: What are the chances that their offspring will have attached earlobes? Answer: There is a 50% chance because there are two boxes with the ee genotype. Father E e e e Ee Ee ee ee

49 Practice Problem 2 Dimples are a dominant trait (D) Not having dimples is the recessive trait (d). A mother is homozygous dominant (DD) The father is homozygous recessive (dd). Question: What are the chances they have children with dimples. Answer: 100% will have dimples because all possible children carry at least one dominant allele. Father d d Mother D D Dd Dd

50 Practice Problem 3 Mother Freckles (F) are a dominant trait. Not having freckles is a recessive trait (f). Question: If mother is a heterozygous and a father is a homozygous recessive, what are the chances that their offspring will have freckles? Answer: There is a 50% chance that their offspring will have freckles because the dominant allele appears half the time. f f Ff f f