Cats do not have appendix and humans do.
Yes, sex chromosomes are homologous in humans.
The appendix.
The human appendix (a small sac near the junction of the small and large intestine) is homologous to a structure called the "caecum", a large, blind chamber in which leaves and grasses are digested in many other mammals.http://scienceline.ucsb.edu/getkey.php?key=3246
Humans have a total of 23 pairs of homologous chromosomes.
Humans
In herbivores like horses and sheep, the appendix is called the "blind end" and apparently still does serve some function in digestion. I believe that cats and dogs to have an appendix, but it is not vermiform (long and skinny) like the human appendix; thus it may be less likely to get infected.
In humans the appendix is a vestigal organ and has no function that we are currently aware of.
destroy bacteria
Grass has cellulose, which humans do not have the bacteria to digest, like cows or horses do. You can eat it, but you can't really digest it for energy. Also, something about not having a working appendix.
yes No. In pigs, the cecum has a pouch that holds bacteria that aid in digestion. It is an active part of the digestive system. In humans, it has evolved into a vestigial appendix.
its the wishbone