Seven trp- mutants are isolated. All 7 mutants are crossed to see if their progeny grow ( ) or do not grow (-). Based on the results, determine how many genes you have identified, and which mutants are in which gene (genes can be represented with a line and numbers over the line indicate which mutations lie on that gene).

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.