For the following questions answer them individually
If two persons with โABโ blood group marry and have sufficiently large number of children, these children could be classified as โAโ blood group:โABโ blood group :โBโ blood group in1:2:1 ratio. Modern technique of protein electrophoresis reveals presenceof both โAโ and โBโ type proteins in โABโ blood groupindividuals. This is an exampleof:
A biologist studied the population of rats in a barn .He found that the average natality was 250, average mortality 240,immigration 20 and emigration 30.The net increase in population is