1. Water-soluble hormones, such as proteins and peptide hormones, activate target cells using _______. a. direct gene activationb. the second-messenger systemc. steroid hormone actiond. diffusion 2. The most common stimulus for prodding endocrine glands into action is ________. a. hormonalb. humoralc. neurald. direct gene activation 3. The endocrine gland most […]

A mating is made between two individuals (S and D) who are first cousins and individual X is produced from this mating. Individual E is a parent of S and individual F is a parent of D. Individuals E and F are full sibs. Individual M is individual E’s sire.A1. Draw the […]

Question: What phenotypes and ratios did you observe in the F1 generation? Question: Based on what you know about Mendelian genetics, did the F2 generation demonstrate the phenotypic ratio that you expected? If not, what phenotypic ratio was obtained with this cross, and why? Question: Describe the phenotypes obtained in the F2 generation. […]

1. Read the “Nutri- Case” about Liz described below. I used to think of my peanut allergy as no big deal, but ever since my experience at that restaurant last year, I’ve been pretty obsessive about it. For months afterward, I refused to eat anything that I hadn’t prepared myself. […]