Adding sodium to chlorine gas will produce table salt. the formation of a new substance shows that change occurred. a. a physical b. a chemical c. both a physical and chemical d. neither a physical nor a chemical

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

other information encoded in your genes might distinguish you from the others in the group