In mice, agouti fur is a dominant trait resulting in individual hairs having a light band of pigment on an otherwise dark hair shaft. A mouse with agouti fur is shown here, along with a mouse with solid color fur, which is the recessive phenotype (A = agouti; a = […]

Chupacabras are mammals with hair length that varies from no hair to very long. It is known that two genes affect the length of a chupacabra’s hair and that the genes have additive effects. A hairless organism has the genotype G1G1H1H1 and a very long haired organism has the genotype […]

Kris and Kurt are twins. You are interviewing them together. You drop a paperclip on the floor while talking to them. You immediately leave the room. You return about 5 minutes later and ask if either of them remember what happened just before you left the room. Neither of them […]

One of a farmer’s more exotic Indian corn cobs has three different kernel colors (Tricolor Corn?). These cobs were easy to obtain. The farmer crosses parent 2 (Yellow Shrunken) with parent 4; both are true breeding. The seed from this cross are then used to grow a second generation of […]