00:01
Speciation denoted by s is an evolutionary process in which an organism gets evolved into a distant species, denoted as t .s.
00:17
Now let's consider an event in which about 50 snails are found to grow in a tree.
00:28
Suppose if any natural calamity like a storm has hit this tree, the tree falls into a nearby sea that is present there.
00:44
The snails that is present in the tree is drifted away through the water and it reaches a island.
00:55
Where the snails evolve themselves and become into a distant species.
01:05
Now let's see what evolution that has happened in this scenario.
01:11
Option a denoted that a land barrier denoted as lb occurred in this above scenario which led to allopatric speciation.
01:25
However, if a species is undergone to evolution denoted as e, due to a physical barrier denoted as p .b, then it is known as allopatric speciation.
01:45
However, this allopatric speciation do not happen due to a land barrier in the above stated scenario.
01:55
Hence option a is not the correct answer.
01:59
Option b stated that a c barrier was responsible, denoted as sb, was responsible for this simpatic speciation...