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[DOCX File]Chapter 8 from Principles of plant genetics and breeding
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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.

[DOC File]Evolution Test Review Sheet
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According to evolutionists, what factor from question 17 contributes to the most genetic variation in an organism? Mutations . What is speciation? Give an example. Evolution of a new species because of geographic, reproductive isolation, or a change in the number of chromosomes. Ex.

[DOC File]Outcome 2—Biodiversity
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Greater genetic diversity means there are lots of distinct populations within a species. For example, there are many varieties of rice in India, yet they are all the same species. Some species have greater genetic variation than others. - For example, rhinoceros have high genetic variation, but cheetahs have low genetic variation.

[DOC File]Variation in a Population
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The phenotype's genetic basis, the genotype associated with the favorable phenotype, will increase in frequency over the following generations. Over time, this process may result in adaptations that specialize organisms for particular ecological niches and may eventually result in the emergence of new species.

[DOC File]Colorado Agriscience Curriculum
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No genetic process generates variation more quickly. In many cases, the pace of evolution, or improvement, appears to increase as the level of genetic variation increases. For example, when genetic variation is used in agricultural breeding programs to increase the size of livestock, many large animals are produced at first.

[DOC File]Bottlenecks and Founder Effects
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An example of the basic idea using marbles… Population bottlenecks occur when a population’s size is reduced for at least one generation. Because genetic drift acts more quickly to reduce genetic variation in small populations, undergoing a bottleneck can reduce a population’s genetic variation by a lot, even if the bottleneck doesn’t ...

[DOC File]David Figurski - Genetic basis of variation in bacteria
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This is an example of how evolution is directed by . natural selection. Spontaneous mutations are of two classes: (1) point mutation, or change of a single nucleotide, and (2) DNA rearrangement, or shuffling of the genetic information to produce insertions, deletions, inversions, or changes in structure.

[DOC File]Variation - The Physics Teacher
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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.

[DOCX File]www.cbsd.org
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Genetic variation occurs between populations. Species also exhibit . geographic variation, differences in the genetic composition of geographically separate populations. Geographic variation in the form of graded change in a trait along a geographic axis is called a . cline (example: birds have increasing body fat as latitude increases.)

[DOC File]Analyzing Genetic Variation
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As restriction sites are created and destroyed by changes in base sequences, the number of restriction fragments in the region that hybridizes to a probe also changes. See the activity about Bob's and Mary's chromosome 19s in Analyzing Genetic Variation: DNA Typing (chapter 24) for an example. Analyzing Genetic Variation

[DOC File]Chapter 23: Microevolution
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Genetic variation must exist for natural selection to occur. the ultimate source of genetic variation is mutations. once variation exists, it can be affected by independent assortment and genetic recombination during gamete formation. consider the cross AaBb x AaBb – 9 different genotypes arise

[DOCX File]Study Island - Ms. Doran's Biology Class - Home
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17. There are many sources of genetic variation among living organisms. Mutations, or changes to an organism's genetic material, are a significant source of genetic variation. Sexual reproduction. results in an offspring that has a combination of genetic material from its parents, which contributes to genetic variation. Meiosis

[DOC File]“Genetic basis of inheritance and variation”
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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.

Example of genetic variation