#3 list each trait you thought the potato head child would have: eye color ear color: nose color:...

#3 – List EACH trait you thought the Potato Head

child would have: Eye Color Ear Color: Nose Color: Lip Color: Skin Color:

What does all this mean???

Gym Sock Genetics

Gym Sock Genetics

1.How many socks are given to a child by a parent?

One from each parent

Gym Sock Genetics

Dominant Trait:• Appears if one or both

parents passes it.• Written as a CAPITAL

letter/allele

Gym Sock Genetics

3. What color represents the dominant trait?

Red represents the dominant trait. (R)

Gym Sock Genetics

Recessive Trait:• Appears ONLY when

both parents pass it.• Written as a lowercase

letter/allele

Gym Sock Genetics

4. What color represents the recessive trait?

White represents the recessive trait. (r)

Gym Sock Genetics

Genotype:TWO inherited alleles/letters (different forms of the gene)

Gym Sock Genetics

5. What genotypes make red?

RR and Rr

Gym Sock Genetics

6. What genotypes make white?

rr

Genotypes always come in pairs

Why????Inherit from one allele

from EACH parent

Gym Sock Genetics

Heterozygous (hybrid):

Different alleles (Rr) for a particular trait.

Gym Sock Genetics

Homozygous (purebred):

Same alleles (RR and rr) for a particular trait.

Gym Sock Genetics

7. List the genotype of a heterozygous individual.

Rr(different alleles = capital letter and lowercase letter)

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8. List the two possible genotypes of a homozygous individual.

RR and rr (same alleles = two capital letters or two lowercase

letters)

Gym Sock Genetics

9. Which of the above genotypes is the homozygous dominant?

RR

Gym Sock Genetics

10. Which of the above genotypes is the homozygous recessive?

rr

Phenotype:• An organism’s

appearance• What you see

Gym Sock Genetics

CFU….What determines the

phenotype??(HINT: Think of 2

letters!!!)

A GENOTYPE

Gym Sock Genetics

11. What is the phenotype of the homozygous dominant genotype?

Red (RR)

Gym Sock Genetics

12. What is the phenotype of the homozygous recessive genotype?

White (rr)

Gym Sock Genetics

13. What is the phenotype of the heterozygous one?

Red(Rr)

Gym Sock Genetics14. What does the sock represent in our model?

Genes Alleles

Gym Sock Genetics

15. What do the two different colors of socks represent?Different alleles

What does all this mean???

Review Questions1. phenotype; genotype2. alleles3. traits or characteristics4. the dominant trait5. Each plant had two alleles for

each characteristic, and each parent gives one allele to the offspring which may be dominant or recessive.