An infant is born with a small tail. What does this phenomenon represent?

The presence of gills in the tadpole of a frog indicates that . . . . . . .

Which of the following methods was considered the most accurate for determining the age of fossils?

Stings of honey bee and the stings of scorpion are
$I.$ analogous organs
$II.$ heterologous organs
$III.$ homologous organs
$IV.$ vestigial organs
The correct combination is

Which of the following structures is homologous to the wing of a bird?

Which type of evidence suggests that humans are more closely related to chimpanzees than to other hominoid apes?