Essay 2: The causes of variation and its biological.

The causes and importance of variation and diversity of organisms Maintaining genetic diversity is of vital importance to all species so they can continue to evolve and adapt to their ever changing environmental conditions.

Causes of Variation and Its Importance to Living.

The cause of variation and its biological importance - Mindmap in A Level and IB Biology.Causes of Variation and its Importance to Living Organisms Variation between living organisms is almost certainly one of the most important features of all life on planet earth as a whole. Without both interspecific and intraspecific variation, Life as we know it would not exist.The causes of variation and its biological importance In the answer to this question you should bring together relevant principles and concepts from as many different modules as possible. Your essay will be marked not only for its scientific accuracy, but also for the selection of relevant material. The essay should be written in continuous prose.


Genetic influences like mutations, meiosis (indepedant segregation, crossing over etc.), and the random fusion of gametes. Then there's influences of the environment like food, climate etc.Although each member of a species has the same genes, variation is caused by them being expressed in different ways. Different variations of the same gene are called alleles, and the combinations of ways in which these alleles are expressed in the phenotype of an individual causes variation. As humans, we have learned to exploit variation.

The Causes Of Variation And Its Biological Importance Essay

The importance of responses to changes in the internal and external environment of an organism. 2015R 10b The importance to humans of the control of growth, reproduction and development of organisms, including themselves. 2015 10a The importance of proteins in the control of processes and responses in organisms.

The Causes Of Variation And Its Biological Importance Essay

The Causes of variation and its biological importance. Variation is caused by the inheritance of different alleles from sexual reproduction and mutation. Whether the organism carries alleles that are advantageous to its survival is determined by its environment. Selection is the process by which an organism becomes adapted to its environment by survival of the fittest, or natural selection.

The Causes Of Variation And Its Biological Importance Essay

Biological sex is also an inherited variation - whether you are male or female is a result of genes you inherited from your parents. Environmental causes of variation.

The Causes Of Variation And Its Biological Importance Essay

The causes of disease The causes of disease in humans are extremely varied. Some diseases are self-inflicted by a person’s lifestyle. Others are genetic and others are caused by pathogenic organisms or viruses. Self-inflicted diseases are caused by the lifestyle choice of the individuals or the individuals surrounding them.

The Causes Of Variation And Its Biological Importance Essay

Genetic and environmental variation. Characteristics in an individual are the result of both genetic and environmental variation. For example, the weight of a dog depends partly on its genes.

The cause of variation and its biological importance.

The Causes Of Variation And Its Biological Importance Essay

The causes and importance of variation and diversity in organisms 1) Antigenic variation in pathogens - antigenic variation in e.g. viruses 2) Evolution of antibiotic-resistance in Bacteria 3) Genetic diversity because of differences in DNA - comparing base sequences.

The Causes Of Variation And Its Biological Importance Essay

Causes of variation and importance Gene mutation, sexual reproduction, chiasmata, environmental factors, biological importance natural selection speciation evolution Osmosis and it's importance.

The Causes Of Variation And Its Biological Importance Essay

The biological importance of water. The movement of substances within living organisms. The structure and functions of carbohydrates. Cycles in Biology. How the structure of proteins is related to their functions. The causes of variation and its biological importance. The process of osmosis and its importance to living organisms.

The Causes Of Variation And Its Biological Importance Essay

Causes of genetic variation There are several causes for variation being present within a population: Each gene has different alleles. Therefore, different individuals may have different alleles. During prophase I of meiosis, chiasmata (crossing over) occurs whereby sections of DNA are swapped between sister chromatids. During metaphase I of meiosis, there is independent assortment of the.

The Causes Of Variation And Its Biological Importance Essay

This variation might be drastic or slow. Variation during reproduction is an inbuilt tendency and it laid a pathway for evolution. In an asexually reproducing organism, variation is limited. Organisms create exact copies of themselves, a clone. But the chances of variation are very high in a sexually reproducing organism. Importance of Variation.

The causes of variation and its biological importance.

The Causes Of Variation And Its Biological Importance Essay

Genetic variation is important because a population has a better chance of surviving and flourishing than a population with limited genetic variation. Genetic diversity also decreases the occurrence of unfavorable inherited traits. Genetic variation comes from mutations within DNA; the movement of genes from one population to another, or gene.

The Causes Of Variation And Its Biological Importance Essay

The Importance of Enzymes in Our Body Essay examples 607 Words 3 Pages Enzymes - are biological catalysts of protein nature, they have the ability to activate a variety of chemical reactions that occur in living organisms The Importance of Enzymes in Plants and Animals Essay 1105 Words 5 Pages Enzymes and their importance in plants and animals (25 marks) Enzymes are biological catalysts, which.

The Causes Of Variation And Its Biological Importance Essay

Biological Explanations of OCD Essay; Biological Explanations of OCD Essay.. consideration the specific part of Phillip’s disorder it can lead to the conclusion that traveling and driving is the cause of OCD for Phillip anxiety disorder.. It was found that the participants with a short variation of the gene showed smaller brain tissue.

The Causes Of Variation And Its Biological Importance Essay

What are The Causes of Variation and its Biological Importance? April 26, 2017 biological causes Education help homework importance Reference variation. 0. Posted What are The Causes of Variation and its Biological Importance? 0 Comments Add a Comment. 1 Answer Active.

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