logo

Human Genetic Variation : Assignment

3 Pages682 Words608 Views
   

Added on  2019-10-16

Human Genetic Variation : Assignment

   Added on 2019-10-16

ShareRelated Documents
Genetic VariationIntroduction Genetic variation can be defined as the difference in the sequence of DNA between the individuals within a population. Differences in DNA occur in germ cells which are egg and sperm. Apart from this, variation also occurs in somatic cells or all other cells. But it is importantto understand that the only variation which arises in germ cell is inherited to one individual from another individual. It affects the population dynamics as well as ultimately evolution. Genetic variation arises due to the genetic mutation. It should also be noted that genetic variation is important because it helps in providing the diversity between as well as within the populations which are required for natural selection. Sometimes, people get confused between genetic variation and genetic diversity and use them interchangeably. But genetic diversity is different from genetic variation. It is the genetic variation of the entire species. The differences in genes allow survival as well as flexibility of a population in the face of changing environmental conditions or circumstances. Therefore, differences in genes are often considered an advantage because it is a type of preparation for the unexpected. The mating pattern is very important. Random mating can sometimes occur when a population interbreeds because based on certain traits one organism selects to mate with another. In such cases, people within a population make particular behavioral choices. These behavioral choices shape the genetic combinations which appear in succeeding generation. There are two major form of nonrandom mating. So, it is said that nonrandom mating can occur in two forms such as inbreeding as well as outbreeding. Inbreeding mating occurs when people with same or similar genotypes are likely to mate with each other apart from with the people with different genotypes.
Human Genetic Variation : Assignment_1

End of preview

Want to access all the pages? Upload your documents or become a member.

Related Documents
Somatic Cell Nuclear Transfer: Advantages and Disadvantages of Cloning
|4
|625
|109

NGS Technology: Enhancing Understanding of Breast Cancer
|8
|689
|162

Familial Hypercholesterolemia: Causes, Symptoms, and Treatment
|9
|2277
|345

Genetic Change: Mutation and Biotechnology
|9
|2272
|1

Plant Flavonoids on Cancer Treatment
|16
|4183
|388

Comparative Analysis of Biological Behaviours
|4
|663
|101