Why do you think when we see a recessive trait, phenotype, like a straight hair line, that we can figure out the genotype? Why can we not for sure determine the genotype of a dominant trait?

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals