(problem 24a, part 1) in drosophila, yellow body is due to an x-linked gene (xy) that is recessive to the gene for gray body (x+). a homozygous gray female is crossed with a yellow male. what are the phenotypes of the f1 progeny?

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.