Jake is in chemistry class. he makes a list of the chemicals his instructor described and the properties of each. silver: bonds with other atoms because of the weak forces of the valence electrons water: bonds allow for liquid state at room temperature and prevent conduction carbon: bonds with other atoms through strong shared electrical bonds niobium: bonds allow for a strong conductivity found in stainless steel which is most likely true about the chemicals?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

What are the student's observations and inferences before he starts his investigation?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.