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[DOC File]Variation - Microsoft
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(i) The genetic make up of an individual (ii) A sex cell (iii) A change in the structure of DNA (iv) A part of DNA with information to make one protein (v) The allele expressed in the heterozygous condition 2006 HL. 12. (a) (i) Explain the following terms as used in genetics: species, variation. (ii) Give one cause of genetic variation.
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[DOC File]“Genetic basis of inheritance and variation”
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Qualitative genetic traits provide discontinuous phenotypic variation, whereas quantitative genetic traits produce phenotypic variation that spans the full spectrum (continuous). Number of genes In qualitative genetics, the effects of single genes are readily detectable, while in quantitative genetics, single gene effects are not discernible.
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[DOCX File]Chapter 8 from Principles of plant genetics and breeding
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Causes of inherited variation: Sexual reproduction. Gamete formation - independent assortment of homologous chromosomes during meiosis ensures genetic variation among gametes. Crossing over - of linked genes, during meiosis, enhances genetic variation. Recombination - random fertilisation between gametes from different parents ensures variation.
what causes genetic variation

Types of genetic variation | Human genetic variation
Types of Variation. Genetic Variation. Three types. Mutations. Change in DNA, single mutation can cause huge differences. Gene Flow. The movement of a gene from one population to another. Sex. Introduce new gene combinations into a population. These are present at …
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[DOC File]Variation
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Why genetic variation is important. Reduced genetic variation means that the population may not be able to adapt to new selection pressures, such as climatic change or a shift in available resources, because the genetic variation that selection would act on may have already drifted out of the population. Vocabulary. Genetic drift. Gene pool
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[DOC File]Variation - Winona
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Therefore, genetic variation is an important consequence of sexual reproduction. Before we discuss the mechanisms that lead to genetic variation, we have to remember that Mutations are the original sources of genetic variation as . Mutations are changes in an organism’s DNA that create different versions of the genes, the alleles.
types of variation in humans

Types of genetic variation