Atall, purple-flowered pea plant (ttpp) is allowed to self-pollinate. (the recessive alleles code for short plants and white flowers.) the phenotypic ratio of the resulting offspring is 9: 3: 3: 1. what is the genotype of the plant whose phenotype appeared once out of every 16 offspring (the "1" in the 9: 3: 3: 1 ratio)?

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.