in 1917 the biologist thomas hunt morgan conducted studies in which he kept some caterpillars in the dark and placed some others under red, green, or blue lights. exposure to red light produced butterflies with brightly colored wings. exposure to green light resulted in dark-colored wings. exposure to blue light or no light resulted in pale-colored wings. what was the most likely conclusion of morgan’s research?

Which group is noted for the independence of gametophyte and sporophyte generations from each other? a) ferns b) mosses, hornworts, and liverworts c) charophytes d) angiosperms e) gymnosperms

Which best describes carbon dioxide’s path out of the body

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.