Rhett and Scarlett are expecting a baby. Rhett's rich uncle has promised them $1 million if their baby has blue eyes and red hair. Brown eyes (B) are
dominant over blue eyes (b). Dark hair is (R) is dominant over red hair (r)
Rhett is heterozygous for brown eyes and dark hair, while Scarlett has blue
eyes and red hair. What is Rhett's genotype?*

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.