Two samples are said to homologous, in this context, when they are both very similar in structure and shape and more than likely function.
homologous
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
I learned about homologous and heterozygous structures in Biology.
A structure with similar shape but a different use
the leg of a horse
homologous
Malpighian.
no.
The presence of homologous structures (for example, the bone structure in chimpanzee arms, human arms, and whale flippers) indicates that the species sharing that homologous structure share a common ancestor.
they live for a while
Vestigial Organs
The ovaries.