If an organism has the genotype ff, the organism is

Modern whales developed their traits through natural selection what occurs during the process of natural selection

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.