Part a the presence of a mutant lac repressor that could not bind lactose would result in transcription even when lactose was present because the mutant repressor would remain bound to the lac see section 18.3 (page 373) . view available hint(s) the presence of a mutant lac repressor that could not bind lactose would result in transcription even when lactose was present because the mutant repressor would remain bound to the lac see section 18.3 (page 373) . no; operator lots of; operator lots of; promoter no; promoter

After which event could you say that evolution has occurred? question 1 options: an allele frequency changes in a population. a white-eyed fly is born into a population of brown-eyed flies. a new predator comes into an environment. an animal gets fat.

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

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.