1. A brown-eyed homozygous dominant female (BB) has a baby with a brown-eyed heterozygous male (Bb). B = brown, b = blue
- Possibility 1: BB, Brown
- Possibility 2: BB, Brown
- Possibility 3: Bb, Brown
- Possibility 4: Bb, Brown
2. Freckles (F) are dominant to no freckles (f). A heterozygous mother (Ff) and heterozygous father (Ff) have a baby. F = freckles, f = no freckles
- Possibility 1: FF, Freckles
- Possibility 2: Ff, Freckles
- Possibility 3: Ff, Freckles
- Possibility 4: ff, No freckles
3. The ability to roll your tongue (R) is a dominant trait. A woman who cannot roll her tongue (rr) has a baby with a man who is homozygous dominant for this trait (RR). R = can roll tongue, r = cannot roll tongue
- Possibility 1: Rr, Can roll tongue
- Possibility 2: Rr, Can roll tongue
- Possibility 3: Rr, Can roll tongue
- Possibility 4: Rr, Can roll tongue
Parent Tip: Review the logic above to help your child master the concept of punnett square practice worksheet.
