A) If 2n = 18, how many chromosomes will be present in somatic cells? b) If 2n = 18, how many chromosomes will be found in the gametes?
c) If n = 18, how many chromosomes will be found in diploid somatic cells?
d) If n = 18, how many pairs of homologous chromosomes will be found in gametes?
e) If 2n = 32, how many different combinations of maternal or paternal chromosomes are possible in a gamete?
f) If 2n = 32, after fertilization has occurred, how many different zygotes are possible?

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.