Which is more massive, air or water vapor? Why?

2. in dragons, a gene on chromosome 1 codes for wing color and a gene on chromosome 2 codes for body color. draw out the stages of meiosis for these two chromosomes from a dragon that is heterozygous for both traits. define your alleles. what are all the possible allele combinations of the gametes produced?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

9. the history of life on earth is recorded in