00:01
So here we are provided with few sentences which are related to human evolution and its relation with the ancestor.
00:32
So our first statement is telling that the simplified evolutionary tree and the expanded one.
00:41
Both of them show that at some point of time chimpanzees and one was evolved from a common ancestor but not shared by humans.
00:54
Although before that there was a common ancestor which was shared by all the three lineage.
01:02
And here our correct option will be true because if we refer to the below diagram we can say.
01:16
That if we talk about the first reference then here this region we can see that there is an ancestor named as pan which was a common ancestor for chimpanzees as well as bon bois.
01:34
But that ancestor that is pan is not the ancestor from which the humans evolved.
01:44
Now if we talk about the common ancestor which was shared by all the three lineages that is chimpanzee bonbos as well as the humans so we can see that this hominy is the main common ancestor from where by moving forward humans evolved and the lineage then separated from here here also we can say that this is the period that is seven million years ago when the lineage got separated and so we can say that this is the main common ancestor among these three lineages.
02:24
Now moving on to the third statement which was given to us.
02:30
It says the common ancestor of humans chimpanzees and born boes they produced generation after generation of descendants, some of which evolved into humans but it was not shown in the diagram that common ancestor had to have also produced generation after generation of descendants and some of which evolved into the common ancestor of chimpanzees and bonboes.
02:59
So here our correct option will be false because if we take another diagram here also here if we talk about the common ancestors of human chimpanzee and bonboes then we can say that their common ancestors lead to gorilla and here we can tell that after generation of generation if we talk about their descendants then here we can tell that due to mutation or we can say natural selection these descendants they will have new species with the new characters or new characteristic among them and some of the characteristic could be being bipedal or quadri pedal...