SBI 3U0 Single Trait Inheritance Activity For this activity, assume that each trait is controlled by a single pair of alleles. Observation Chart Earlobe Attachmen Hand Tongue Rolling Widow Peak Eye Pigment Taster Bent Bent Test Clasping Thumb Finger Phenotyp e Genotype Procedure: Determine your genotype and phenotype for each of the following 8 traits. Record your observations in the chart above. Note: When writing the genotype of a dominant trait, use a capital letter followed by a dash (i.e. B-). When writing the genotype for a recessive trait, use two lower case letters (i.e. bb)

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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SBI 3U0
Single Trait Inheritance Activity
For this activity, assume that each trait is controlled by a single pair of alleles.
Observation Chart
Tongue
Rolling
Widow
Peak
Earlobe
Attachmen
Eye
Pigment
Taster
Hand
Bent
Thumb
Bent
Test
Clasping
Finger
Phenotyp
e
Genotype
Procedure: Determine your genotype and phenotype for each of the following 8 traits. Record
your observations in the chart above.
Note: When writing the genotype of a dominant trait, use a capital letter followed by a dash (i.e.
B-). When writing the genotype for a recessive trait, use two lower case letters
(i.e. bb)
Transcribed Image Text:SBI 3U0 Single Trait Inheritance Activity For this activity, assume that each trait is controlled by a single pair of alleles. Observation Chart Tongue Rolling Widow Peak Earlobe Attachmen Eye Pigment Taster Hand Bent Thumb Bent Test Clasping Finger Phenotyp e Genotype Procedure: Determine your genotype and phenotype for each of the following 8 traits. Record your observations in the chart above. Note: When writing the genotype of a dominant trait, use a capital letter followed by a dash (i.e. B-). When writing the genotype for a recessive trait, use two lower case letters (i.e. bb)
A. Tongue Rolling
The ability to "roll" the tongue is dominant (R) while non-rolling is recessive
(r)
В.
PTC Taster (DO NOT COMPLETE)
The ability to taste is dominant (T) while inability to taste is recessive (t)
C. Hand Clasping - Clasp your hands together quickly so that your fingers interlock
Crossing the left thumb over the right is dominant (B), the reverse is recessive (b)
D. Bent or "Hitchhikers" Thumb
A straight thumb is dominant (H), while the ability
to bend the last joint backward at an angle of 60° or
more is recessive (h)
E. Bent Little Finger - Place the palms of your hand side by side with the
palms facing up
straight
Dominant condition exists when the last joints of the little
finger
bend away from each other (B), the recessive condition is when there are
straight fingers (b)|
F. Widow's Peak - Examine the hairline on the forehead
The widow's peak is dominant (W) while a straight hairline is
recessive (w)
Widows peak
G. Earlobe attachment
"free" (unattached) earlobes are dominant (E),
attached earlobes are recessive (e)
Н.
Eye Pigmentation
A dark pigment (green/brown/black) is dominant (P),
a light pigment (grey/blue) is recessive (p)
Transcribed Image Text:A. Tongue Rolling The ability to "roll" the tongue is dominant (R) while non-rolling is recessive (r) В. PTC Taster (DO NOT COMPLETE) The ability to taste is dominant (T) while inability to taste is recessive (t) C. Hand Clasping - Clasp your hands together quickly so that your fingers interlock Crossing the left thumb over the right is dominant (B), the reverse is recessive (b) D. Bent or "Hitchhikers" Thumb A straight thumb is dominant (H), while the ability to bend the last joint backward at an angle of 60° or more is recessive (h) E. Bent Little Finger - Place the palms of your hand side by side with the palms facing up straight Dominant condition exists when the last joints of the little finger bend away from each other (B), the recessive condition is when there are straight fingers (b)| F. Widow's Peak - Examine the hairline on the forehead The widow's peak is dominant (W) while a straight hairline is recessive (w) Widows peak G. Earlobe attachment "free" (unattached) earlobes are dominant (E), attached earlobes are recessive (e) Н. Eye Pigmentation A dark pigment (green/brown/black) is dominant (P), a light pigment (grey/blue) is recessive (p)
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