What are vestigial organs and give some examples?? Also what are alleles??
Vestigial organs are those particular organs that are present as reduced structures and they do not perform any functions in the body. As the organs are developed and functional in lower organisms, they act as the proof of evolution. For example, appendix, ear muscles, nictitating membrane of eye, mammary gland in man are some of the vestigial organs present in human body.
Alleles are group of genes which may present in alternative form in the specific locus of specific chromosome. They may be in pair or multiple.