The process of transfer of hereditary characters from one generation to another generation is called heredity. The variation is defined as the difference in the characters from offsprings to their parents so whats the sources that affect the variation lets discuss about it. The following are the main factors affecting the variation
1. Recombination: It is one of the most important factors the recombination means the combination of genes. As the growing population needs to fulfill the demand of the people. The people in the genetic engineering needs the change or recombination of genes due to this the genotype of the cell changes as a result the variation occurs.
2. Crossing over: The crossing over takes place during the meiosis first on the pachytene stage. During this process the exchange of the genetic material takes place so that also changes the genotype as a result so the variation occurs.
3. Mutation: The changes in the characteristics of the heredity characters of a generation of the organisms is known as mutation. The mutation occurs due to some in placement or some errors in the genes hence in this way, this are the factors affecting the mutation.
There are two types of variation they are
1. Heritable variation: The variation that can be transferred from one generations to another generation is known as heritable variation.
2. Non-heritable variation: The variation that cannot be transferred from one generation from to another is called non-heritable variation.
Also on the nature of the variation they can be distinguished as
1. Somatic variation: The changes that occur in the somatic cell , due to which the variation occur is known as somatic variation. This are non heritable variation as they form on the somatic cell.
2. Germinal cell variation: The changes that occur in the germinal cell of the organisms due to which the variation occurs is known as germinal cell variation. As we know that germinal cell helps in the reproduction so the variation are heritable. And can be transfer from one form to another generation. For example the organism containing extra fingers.
Hence in this way the variation is well explained.
1. Recombination: It is one of the most important factors the recombination means the combination of genes. As the growing population needs to fulfill the demand of the people. The people in the genetic engineering needs the change or recombination of genes due to this the genotype of the cell changes as a result the variation occurs.
2. Crossing over: The crossing over takes place during the meiosis first on the pachytene stage. During this process the exchange of the genetic material takes place so that also changes the genotype as a result so the variation occurs.
3. Mutation: The changes in the characteristics of the heredity characters of a generation of the organisms is known as mutation. The mutation occurs due to some in placement or some errors in the genes hence in this way, this are the factors affecting the mutation.
There are two types of variation they are
1. Heritable variation: The variation that can be transferred from one generations to another generation is known as heritable variation.
2. Non-heritable variation: The variation that cannot be transferred from one generation from to another is called non-heritable variation.
Also on the nature of the variation they can be distinguished as
1. Somatic variation: The changes that occur in the somatic cell , due to which the variation occur is known as somatic variation. This are non heritable variation as they form on the somatic cell.
2. Germinal cell variation: The changes that occur in the germinal cell of the organisms due to which the variation occurs is known as germinal cell variation. As we know that germinal cell helps in the reproduction so the variation are heritable. And can be transfer from one form to another generation. For example the organism containing extra fingers.
Hence in this way the variation is well explained.
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