need help with these questions
1. TONGUE ROLLER - The R gene for the ability to roll the tongue into a U shape is dominant over the r gene for lack of this ability
Dominant R = tongue roller Recessive r = non-tongue roller
Phenotype _____________________ Genotype(s) =
2. ATTACHED EAR LOBE - The A gene for unattached earlobes (pendulous) is dominant to the a gene form for attached earlobes (non-pendulous).
Dominant A = unattached earlobes Recessive a = attached earlobes
Phenotype ___________________ Genotype(s) =
3. WIDOW'S PEAK - The hair line at the center of the forehead may dip down to form a point.
The W gene for a widow's peak is dominant over the w gene for a straight hairline
Dominant W = widow's peak Recessive w = straight hairline
Phenotype ____________________ Genotype(s) =
4. THUMB CROSSING - The T gene for crossing the left thumb over the right thumb when you
interlace your fingers in dominant over the t gene for crossing the right thumb over the left.
Dominant T = left thumb over right Recessive t = right thumb over left
Phenotype ____________________ Genotype(s) =
5. POLYDACTLY - The F gene for polydactly (six fingers per hand) is dominant over the f gene
for five fingers per hand.
Dominant F = six fingers Recessive = five fingers
Phenotype ____________________ Genotype(s) =
6. CLEFT IN CHIN - The C gene for a cleft in the chin is dominant over the c gene
for not having a cleft in the chin.
Dominant C= chin cleft Recessive c = no chin cleft
Phenotype ____________________ Genotype(s) =
7. DIMPLES - The D gene for having dimples is dominant over the d gene
for no dimples.
Dominant D= dimples Recessive d = no dimples
Phenotype ____________________ Genotype(s) =
8. EYEBROW SHAPE - The B gene for having bushy eyebrows is dominant over the b gene
for fine eyebrows.
Dominant B= bushy eyebrows Recessive b = fine eyebrows
Phenotype ____________________ Genotype(s) =
9. FRECKLES - The F gene for having freckles is dominant over the fgene
for fine eyebrows.
Dominant F= freckles Recessive f = no freckles
Phenotype ____________________ Genotype(s) =
