👉 The term "lophiostomate" refers to a group of animals that have bilateral symmetry, which means they have both male and female reproductive organs. Lophiostomates are characterized by having two sets of sex chromosomes (XY or XX) in their gametes, allowing them to produce two types of sperm and eggs. This is different from other species, such as fish or birds, which have only one set of X or Y chromosomes. The term "lophiost
