The connecting link between ape and man is

There are two opposing views about the origin of modern man. According to one view,$Homo$ $erectus$ in Asia were the ancestors of modern man. $A$ study of $DNA$ variation,however,suggested an African origin of modern man. What kind of observation on $DNA$ variation could suggest this?

In which of the following did bipedal locomotion first evolve?

The chronological order of human evolution from early to recent stages is:

The first mammals were like $A$. Their fossils are small-sized. Mammals were $B$ and protected their unborn young inside the mother's body. Choose the correct option for $A$ and $B$ to complete the given $NCERT$ statement.

Fossils discovered in Java in $1891$ belonged to