Phenotype and Genotype Questions see attached upload

Lab Report

Name: Kwesi___________________
Section: ______________________

Phenotype and Genotype
Exercise 1 – Observing Phenotype Characteristics
Record your personal phenotype and possible genotypes in Data Table 1 for each of the
following traits.
Data Table 1 – Phenotype and Genotype
Trait
Dimpled Chin
Free Ear Lobe

Phenotype &
Genotype from
Parent A

Phenotype &
Genotype from
Parent B

dimpled chin
Dd
attached ear lobe
aa

Ability to Taste
PTC Strips

ability to taste

Interlocking
Fingers

right thumb over left

Mid-digital Hair
Bent Little Finger
Widow’s Peak

Pp
ff
hair on joints
HH
little finger bends
Bb
straight hairline
ww

Hitchhiker’s
Thumb

bent thumb

Blue or Green
Eyes

green eyes

Rolled Tongue

TT
ee
rolled tongue
Ll

Prepared Punnett Squares
1

Offspring

There are 20 squares provided; two for each trait. Use these Punnett squares to show both the
genotype and phenotype ratios for each of the traits.
Dimpled Chin

Parent A

Pare
nt B

Free
Ear lobe

Parent A

Parent A

Pare
nt B

Parent A

PTC Strips

Parent A

Pare
nt B

Parent A

Pare
nt B

Mid-digital
hair

Free
Ear lobe
Pare
nt B

Pare
nt B

Interlocking
fingers

Parent A

Pare
nt B

Pare
nt
B

PTC Strips

Dimpled Chin

Interlocking
fingers

Parent A

Pare
nt B

Parent A

Mid-digital
hair
Pare
nt B

Parent A

Lab Report

Bent Little
Finger

Name: Kwesi___________________
Section: ______________________

Parent A

Bent Little
Finger

Pare
nt B

Widow’s Peak

Pare
nt B

Parent A

Widow’s Peak

Pare
nt B

Hitchhiker’s
Thumb

Parent A

Hitchhiker’s
Thumb

Parent A

Pare
nt B

Parent A

Blue or Green
Eyes

Pare
nt B

Rolled
Tongue

Parent A

Pare
nt B

Pare
nt B

Blue or Green
Eyes

Parent A

Parent A

Pare
nt B

Parent A

Rolled
Tongue

Pare
nt B

Pare
nt B

3

Parent A

Questions:
1.

As “Parent B”, how many recessive traits did you express? What were they?

2. As “Parent B”, how many dominant traits did you express? What were they?

3. As “Parent B”, what is the likelihood or chances of you passing a dominant allele onto
your “offspring” for the following traits:
a. Dimpled chin
b. Free ear lobe
c. Ability to taste PTC
d. Brown eyes

4. What is the likelihood or chances of your “offspring” receiving a recessive allele for the
following traits:
a. Widow’s peak
b. Hitchhiker’s thumb
c. Green eyes
d. Rolled tongue

5. While the traits studied in Exercise 1 were hypothetical genetic traits, what type of
genetic traits do you think are important to study and predict?

Lab Report

Name: Kwesi___________________
Section: ______________________

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