(1.) In the earthworm, the intestine is ______ to the _____ a. dorsal, esophagus b. posterior, crop … Show more (1.) In the earthworm, the intestine is ______ to the _____ a. dorsal, esophagus b. posterior, crop c. posterior, pyloric caeca d. dorsal aortic arches e. anterior, cerebral ganglia (2.) Which of the following are homologous structures in the mouse, clam and earthworm, respectively? a. heart, visceral mass, aortic arches b. lungs, ctenidia, skin c. pancrease, hepatic vein, nephrons d. esophagus, labial palps, crop e. caecum, mantle, prostomium (3.) You have 2 genes with two different alleles on two different chromosomes. How many different allele combinations can their offspring inherit? • Show less