Earlobe Attachment Tongue Rolling Cleft Chin Dimples

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First found May 22, 2018

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TRAIT
VERSION 1
VERSION 2
GENETIC INERITANCE
What is the current opinion of
how this trait is inherited?
Attached Earlobes
Detached Earlobes
Can Roll Tongue
Can’t Roll Tongue
Has Clift Chin
Smooth Chin
Dimples (1 or both sides)
No Dimples
Right Handed
Left Handed
Has Freckles
No Freckles
Naturally Curly Hair
Naturally Straight Hair
Right Thumb On Top
Left Thumb On Top
Normal Color Vision
Colorblind
Widow’s Peak Hairline
Straight Hairline
Can Taste PTC
Can Not Taste PTC
6 Fingers On Each Hand
5 Fingers On Each Hand
Earlobe Attachment
Tongue Rolling
Cleft Chin
Dimples
Handedness
Freckles
Hair Shape
Hand Clasping
Colorblindness
Hairline Shape
PTC Tasting
# of Fingers
TRAIT
VERSION 1
VERSION 2
GENETIC INERITANCE
What is the current opinion of
how this trait is inherited?
Attached Earlobes
Detached Earlobes
Can Roll Tongue
Can’t Roll Tongue
Has Clift Chin
Smooth Chin
Dimples (1 or both sides)
No Dimples
Right Handed
Left Handed
Has Freckles
No Freckles
Naturally Curly Hair
Naturally Straight Hair
Right Thumb On Top
Left Thumb On Top
Normal Color Vision
Colorblind
Widow’s Peak Hairline
Straight Hairline
Can Taste PTC
Can Not Taste PTC
6 Fingers On Each Hand
5 Fingers On Each Hand
Earlobe Attachment
Tongue Rolling
Cleft Chin
Dimples
Handedness
Freckles
Hair Shape
Hand Clasping
Colorblindness
Hairline Shape
PTC Tasting
# of Fingers
TRAITS LAB POST-LAB QUESTIONS:
Name: ______________________ Per: ___
1. Read the supplemental handout and determine how each of these traits is inherited. Use this information to fill in
the 4th column of the table. Include if one version of the trait is considered to be dominant whenever possible.
2. Some of the traits you looked at in this lab are considered to be MONOGENIC TRAITS. This means that the
characteristic observed is controlled by a SINGLE gene. Only a few of our traits are monogenic while most of our traits
are considered to be POLYGENIC. Explain what this means.
Most of our traits have more than one way they can appear. For example, the EYE COLOR trait can appear as shades of
brown, green, or blue. When different variations of the gene exist for the same trait, they are called ALLELES.
3. Describe what a DOMINANT ALLELE is and explain when it will show up in a person.
4. Describe what a RECESSIVE ALLELE is and explain when it will show up in a person.
“Traits caused by dominant alleles are always more common than those caused by recessive alleles.”
5. Explain whether the statement above is true or false and provide a specific example to support your answer.
6. Mr. Ruzicka loves vegetables! Two of his favorite veggies are broccoli and brussel sprouts. Make a prediction of
whether Mr. Ruzicka can taste PTC or not. Explain how you came to this conclusion and what the connection is to his
love of broccoli and brussel sprouts.
TRAITS LAB POST-LAB QUESTIONS:
Name: ______________________ Per: ___
1. Read the supplemental handout and determine how each of these traits is inherited. Use this information to fill in
the 4th column of the table. Include if one version of the trait is considered to be dominant whenever possible.
2. Some of the traits you looked at in this lab are considered to be MONOGENIC TRAITS. This means that the
characteristic observed is controlled by a SINGLE gene. Only a few of our traits are monogenic while most of our traits
are considered to be POLYGENIC. Explain what this means.
Most of our traits have more than one way they can appear. For example, the EYE COLOR trait can appear as shades of
brown, green, or blue. When different variations of the gene exist for the same trait, they are called ALLELES.
3. Describe what a DOMINANT ALLELE is and explain when it will show up in a person.
4. Describe what a RECESSIVE ALLELE is and explain when it will show up in a person.
“Traits caused by dominant alleles are always more common than those caused by recessive alleles.”
5. Explain whether the statement above is true or false and provide a specific example to support your answer.
6. Mr. Ruzicka loves vegetables! Two of his favorite veggies are broccoli and brussel sprouts. Make a prediction of
whether Mr. Ruzicka can taste PTC or not. Explain how you came to this conclusion and what the connection is to his
love of broccoli and brussel sprouts.
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