An individual has the chromosomes below where the dot represents the centromere: ABCDEFG. H AEDCBFG. H If a crossover event occurs between the B and C loci, what is the longest chromosome formed?

In the given sequence of chromosomes to represents the centro-mere is ABCDEFG.H AEDCBFG.H.

In case of crossing over among B and C, made recombinants will be;

1) ABCDEA  

2) H.GBCDEFG.H

However, out of these two made crossover chromosomes, only 1st recombinant chromosome as ABCDEA is the straight recombinants chromosome .

the wires in the toaster turning red and the toast crisping and turning brown

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.