Code coverage means, how well your test set is covering your source code. i.e. to what extent is the source code covered by the set of Test cases. As mentioned in above answers, there are various coverage criteria, like paths, conditions, functions, statements, etc.
Chiasmus. Definition: Chiasmus is a specific type of parallelism. It consists of two parallel phrases in which corresponding words or phrases are placed in the opposite order.
Accept the points below in an appropriately annotated diagram. 1  crossing over/chiasmata formed during prophase I of meiosis; 2  pairing of homologous chromosomes/synapsis; 3  chromatids break (at same point); (do not accept chromatids overlap)  non-sister chromatids join up/swap/exchange alleles/parts;