Kisspeptin is a protein in humans that has an important role in initiating secretion of the releasing factor gonadotropin-releasing hormone (gnrh). endocrinologists are finding that the protein kisspeptin and its receptor are central to sexual maturation at puberty. neurons that release kisspeptin carry estrogen receptors. if this is a negative feedback system, high levels of estrogen would be expected to:

Amines amides and amino acids are categories of

Suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous? a. 58 b. 49 c. 29 d. 43

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?