Evolution

Next we’re starting with the new topic called as evolution. Evolution is a natural process, so we have to observe this process however, evolution is a long time process and after long time the changes can seen. To observe this process a long time is required, and humans cannot observe these changes in their life time. Evolution is an observational process means the evidences of past and current situation in present, but we couldn’t predict the changes in future. Evolution is basically a simple, natural and time taking process in which living organisms changes gradually.

Evolution can be defined as the permanent and gradual (slow or time taking) changes in the genetic material or genome of an organisms from bacteria to human that is based on current situation. Every living organisms have natural task such as survival that is to survive in all climate and reproduction. Therefore the genome will be transferred to next progeny.

For example: Rabbit, is living in suitable environmental condition such as the surrounding contains light, temperature, rain, microbes, herbivores and carnivores. If any environmental changes takes place such high or too low rainfall, drastic change in temperature. In the next generations after 100 years, the changes will start to adapt such conditions.So it is called as evolution. An Evolution means changes or variations which occur after a particular period of time. Therefore the reasons of variation or changes in the genome are:

1) Sudden change

2) Recombination

3) The chromosome arrangement

4) Genetic changes

5) Random death

Types of evolution :

Basically evolution is of two types such as Micro-evolution and Macro-evolution.

From the name itself suggest micro means small that is very small change which does not affect the species, whereas macro means large or huge change which affects the species. Let’s first see the micro-evolution.

1) Micro-evolution: Evolution means gradual change in genome of living organisms, the gradual changes occur means there must be sudden changes in smallest part of DNA, so micro-evolution can be defined as the mutation in alleles of DNA. Alleles are the smallest part of DNA.

The mutation or sudden change in the allele leads to change in gene, that means alleles are present in genes. Genes are present in chromosome, so there must be chromosomal changes, leads to defect in cell means tissue is also affected. Tissue is also part of our organ therefore organ get changed, means mutation occur in organism.

2) Macro-evolution:When changes occur at following level such as species level, genus, family, order, division or phylum. The changes occur above the species level called as macro evolution. These changes are studied by two scientist such as Lamarck and Darwinism.

Question and answers:

1) What is evolution?

Answer: Evolution is a natural process, so we have to observe this process however, evolution is a long time process and after long time the changes can seen.

2) What is the concept of evolution?

Answer:Evolution is a natural process, so we have to observe this process however, evolution is a long time process and after long time the changes can seen. To observe this process a long time is required, and humans cannot observe these changes in their life time. Evolution is an observational process means the evidences of past and current situation in present, but we couldn’t predict the changes in future. Evolution is basically a simple, natural and time taking process in which living organisms changes gradually.

Evolution can be defined as the permanent and gradual (slow or time taking) changes in the genetic material or genome of an organisms from bacteria to human that is based on current situation. Every living organisms have natural task such as survival that is to survive in all climate and reproduction. Therefore the genome will be transferred to next progeny.

For example: Rabbit, is living in suitable environmental condition such as the surrounding contains light, temperature, rain, microbes, herbivores and carnivores. If any environmental changes takes place such high or too low rainfall, drastic change in temperature. In the next generations after 100 years, the changes will start to adapt such conditions. So it is called as evolution.

3) What are the types of evolution?

Answer:Basically evolution is of two types such as Micro-evolution and Macro-evolution.

From the name itself suggest micro means small that is very small change which does not affect the species, whereas macro means large or huge change which affects the species.

4) What is micro- evolution?

Answer:Evolution means gradual change in genome of living organisms, the gradual changes occur means there must be sudden changes in smallest part of DNA, so micro-evolution can be defined as the mutation in alleles of DNA. Alleles are the smallest part of DNA.

The mutation or sudden change in the allele leads to change in gene, that means alleles are present in genes. Genes are present in chromosome, so there must be chromosomal changes, leads to defect in cell means tissue is also affected. Tissue is also part of our organ therefore organ get changed, means mutation occur in organism.

5) What is macro-evolution?

Answer:When changes occur at following level such as species level, genus, family, order, division or phylum. The changes occur above the species level called as macro evolution. These changes are studied by two scientist such as Lamarck and Darwinism.

6) What are the reasons behind evolution?

Answer:An Evolution means changes or variations which occur after a particular period of time. Therefore the reasons of variation or changes in the genome are:

1) Sudden change

2) Recombination

3) The chromosome arrangement

4) Genetic changes

5) Random death


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