Which one of the following is a pair of homologus organs
Lungs of rabbit and gills of rohu
Wing of bat and wing of butterfly
Pectoral fin of rohu and the forelimb of horse
Wing of grasshopper and wing of crow
Deviation of homologues are caused by
Anthropometry is useful in the study of
$A.I.$ Oparin wrote
Replacement of original hard parts or even the soft tissues of the organisms by minerals is known as
Which of the following is not true for viruses