Reproduction
Reproduction is the biological process by which existing organisms give rise to their offspring. Reproduction is carried out by different living organisms to perpetuate their species. Reproduction can be of two types – Sexual mode and Asexual mode.
Evolution
It is a long, drawn out process with gradual changes that take place over millions of years. Evolution operates on different factors like variations, natural selection and adaptation. Evolution results in group of organisms living together in a well-defined environment. Organisms living in this specific environment reproduce the offspring which are adapted to that specific environment. e.g. Over generations, giraffes developed long necks to eat leaves growing high up on trees.
Evolution occurs by stages
Evolution is a step by step process, it does not happen in few years. It takes generations by generations to exhibit variations over a large range. Organisms get adapted to their habitat by bring about certain changes in their structure. These changes are called as adaptations which bring about variations in the evolution. These variations are carried on to successive generations by natural selection.
Evolution cannot be equated with progress
Variations
These are the changes caused in the genetic material thereby bringing about changes in the offspring.
Variations caused by mutations can be beneficial or detrimental.
Varations are advantageous to species and not individuals
Adverse changes in the environment can kill a species.
Reproduction
Reproduction is the biological process by which existing organisms give rise to their offspring. Reproduction is carried out by different living organisms to perpetuate their species. Reproduction can be of two types – Sexual mode and Asexual mode.
Evolution
It is a long, drawn out process with gradual changes that take place over millions of years. Evolution operates on different factors like variations, natural selection and adaptation. Evolution results in group of organisms living together in a well-defined environment. Organisms living in this specific environment reproduce the offspring which are adapted to that specific environment. e.g. Over generations, giraffes developed long necks to eat leaves growing high up on trees.
Evolution occurs by stages
Evolution is a step by step process, it does not happen in few years. It takes generations by generations to exhibit variations over a large range. Organisms get adapted to their habitat by bring about certain changes in their structure. These changes are called as adaptations which bring about variations in the evolution. These variations are carried on to successive generations by natural selection.
Evolution cannot be equated with progress
Variations
These are the changes caused in the genetic material thereby bringing about changes in the offspring.
Variations caused by mutations can be beneficial or detrimental.
Varations are advantageous to species and not individuals
Adverse changes in the environment can kill a species.