- Both of the girls have freckles. Which parent did they inherit the freckle trait from?
→ They inherited the freckle trait from their father, since only he has freckles.
- Jayden needs to wear glasses to see. Which parent did she inherit the trait from?
→ She inherited the need for glasses from her mother, since only the mother wears glasses.
- Both of the girls are right handed. Which parent did they inherit that trait from?
→ They inherited right-handedness from both parents, since both parents are right-handed.
- Kaydence has curly hair but likes to straighten it. Which parent passed down the curly hair gene?
→ The curly hair gene came from the father, since he has curly hair and the mother does not.
- Knowing that both girls have allergies, which parent did Jayden inherit hers from?
→ Jayden inherited her allergies from her mother, since only the mother has allergies.
- The girls have blue eyes. Which parent passed down the blue eye trait?
→ The blue eye trait was passed down from the father, since he has blue eyes and the mother has brown eyes.
- The girls have dimples. Which parent passed down the dimple trait?
→ The dimple trait was passed down from the father, since he has dimples and the mother does not.
- The girls have blonde hair right now. Does that mean they will still have blonde hair as adults?
→ No, because hair color can change with age; they may darken as they grow older.
- Their blood types are A and O. This means that their ______ didn’t pass down the O blood type.
→ Their father didn’t pass down the O blood type (since he has AB blood type, which cannot contribute an O allele).
- Which parent also has allergies and likely passed them down?
→ The mother has allergies and likely passed them down to both girls.
- Based on these results, are the girls actually identical twins? Why or why not?
→ No, they are not identical twins because they have different blood types (A and O), which is impossible for identical twins who share the same DNA.
Parent Tip: Review the logic above to help your child master the concept of inherited traits worksheet 5th grade.
