Science Interactive
Exercise 1: Observing Phenotype Characteristics
Data Table 1: Phenotype and Genotype
|Trait |Phenotype Characteristics |Phenotype & Genotype from |Phenotype & |Offspring |
| | |Parent 1 |Genotype(s) from | |
| | | |Parent 2 | |
|Dimpled Chin |[pic] |[pic] | | |
|[pic] | | | | |
|Free ear lobe |[pic] |[pic] | | |
|[pic] | | | | |
|Ability to taste PTC strips |[pic] |[pic] | | |
|Interlocking fingers |[pic] |[pic] | | |
|[pic] | | | | |
|Mid-digital hair |[pic] |[pic] | | |
|Bent little finger |[pic] |[pic] | | |
|[pic] | | | | |
|Window's peak |[pic] |[pic] | | |
|[pic] | | | | |
|Hitchhiker's thumb |[pic] |[pic] | | |
|[pic] | | | | |
|Blue or green eyes |[pic] |[pic] | | |
|[pic] | | | | |
|Rolled tongue |[pic] |[pic] | | |
| | | | | |
|[pic] | | | | |
Punnett Squares
Example: As described in Data Table 1, Parent 1 has the genotype Dd for the dimpled chin gene. If the recorded genotype for Parent 2 was dd, the Punnett Square would appear as follows. From this, the phenotypic and genotypic ratios may be deduced.
[pic]
IMPORTANT: Two blank Punnett squares are provided for each trait. If Parent 2 has a dominant phenotype, then you will create two Punnett squares; if Parent 2 has a recessive phenotype, then you will create one Punnett square.
|Dimpled |Parent 1 |
|Chin | |
| | | |
|Parent 2 | | | |
| | | | |
|Dimpled Chin |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Free Ear Lobe |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Free Ear Lobe |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Ability to Taste |Parent 1 |
|PTC Strips | |
| | | |
|Parent 2 | | | |
| | | | |
|Ability to Taste |Parent 1 |
|PTC Strips | |
| | | |
|Parent 2 | | | |
| | | | |
|Interlocking |Parent 1 |
|Fingers | |
| | | |
|Parent 2 | | | |
| | | | |
|Interlocking |Parent 1 |
|Fingers | |
| | | |
|Parent 2 | | | |
| | | | |
|Mid-digital Hair |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Mid-digital Hair |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Bent Little Finger |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Bent Little Finger |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Widow’s Peak |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Widow’s Peak |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Hitchhiker’s Thumb |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Hitchhiker’s Thumb |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Blue or Green Eyes |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Blue or Green Eyes |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Rolled Tongue |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
|Rolled Tongue |Parent 1 |
| | | |
|Parent 2 | | | |
| | | | |
Exercise 2: Genetic Screening – Phenotype and Genotype
Data Table 2: Karyotype for Chromosomal Disorder 1
|Karyotype |
|[pic][pic] | |
Data Table 3: Karyotype for Chromosomal Disorder 2
Note that there are 2 chromosomes present at X.
Data Table 3: Karyotype for Chromosomal Disorder 2
|Karyotype |
| | |
Data Table 4: Karyotype to Genotype to Phenotype
|# |Karyotype Image |Chromosomal Disorder |Genotype |Phenotype |
|1 |[pic] | | | |
|2 |[pic] | | | |
|3 |[pic] | | | |
|4 |[pic] | | | |
|5 |[pic] | | | |
|6 |[pic] | | | |
-----------------------
Chromosomes of Disorder 1
[pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic]
Chromosomes of Disorder 2
[pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic][pic]
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