When gregor mendel crossed true-breeding tall plants with true-breeding short plants, why was it impossible to observe segregation? . a. alleles for height do not segregate in the f2. . b. alleles segregate only in the f2 generation. . c. alleles segregate best when two tall plants are crossed. . d. alleles in the f1 must be tt to have height variety in the f2.

Which of the following statements best describes the relationship between the environment and human health? a. the environment is the only factor that affects human health. b. many aspects of the environment can have an impact on human health. c. human health is impacted by changes in climate. d. the environment has no impact on human health. select the best answer from the choices provided

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.