How does reproduction link to variation ?

Explanation

Every organism produces offsprings either through asexual or through sexual reproduction.
`rarr` The offsprings produced through these reproductive processes are similar, but subtly different.
`rarr` In asexual reproduction, although all the offsprings resemble each other and to their single parent, yet minor variation arise in them.
`rarr` Very little differences among the individual plants can be seen in a field of sugar cane.
`rarr` In most of sexually reproducing animals including human beings, quite distinct variations are visible among offsprings.