Attached earlobes is a recessive trait. Susan and all of her immediate family have attached earlobes but her paternal grandmother has unattached earlobes. Use the letters ( R or r ) to 1. answer the following. ( 2 pts) GENOTYPE The most likely 'earlobe' genotype of Susan's paternal grandmother must be: If Susan, with her recessive-trait for attached earlobes, and all of her children that have unattached or free-earlobes', then the genotype for the children's father is most likely to be: Provide the PHENOTYPES for each of the following. (2 pts) PIIENOTYPE Straight little fingers is a recessive trait. Carlos has straight little fingers, but both his mother and father have the genotypes "Bb". His parent's phenotype for their little fingers is: Right handedness is a dominant trait. A pair have one child with the genotype "Rr", which means the phenotype for that child would be:.