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6.G Meiosis Graphic Organizer 6.H Genetic Variation
6.G Meiosis Graphic Organizer 6.H Genetic Variation

... _____12. Which of the following is not true of meiosis? a. involves DNA replication b. provides genetic variation c. occurs in reproductive cells d. prevents genetic variation 6.H _____13. A mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous ...
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... 3. chromosome—the whole X; made of DNA and histone proteins 4. gene—section of a chromosome; each gene codes for a specific protein 5. sister chromatid—half of a chromosome; each is identical to the other in genes contained 6. centromere—the point at which the chromatids are attached 7. mitosis—divi ...
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... 8. What 2 factors affect the makeup of the gene pool? 9. Charles Darwin identified these 4 main factors that affected natural selection: a. b. c. d. 9. Why does evolution act upon phenotype rather than genotype? ...
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... C) Trait  Protein  RNA  DNA D) DNA  RNA  Protein  Trait _____ 18. In sheep, white fur is dominant to black fur. If two white sheep produce a black offspring, the parent’s genotypes for color must be: A) Heterozygous. B) Homozygous white. C) Homozygous black. D) White _____19. Different version ...
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... • Mendel then thought that each trait was controlled by a pair of “factors”, and that each factor could be one of two kinds. For example, one factor for green pod color and one for yellow pod color. • In a cross, the offspring receives one factor from each parent. • In a hybrid one factor may be hi ...
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... 11. Explain the reason why those who reproduce sexually create offspring which are all genetically unique. ...
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... phosphorylation a number of aminoglycoside antibiotics such as kanamycin, neomycin, geneticin (or G418) and paromomycin. Of these, G418 is routinely used for selection of transformed mammalian cells. The other three are used in a diverse range of plant species, however, kanamycin has proved to be in ...
< 1 ... 1710 1711 1712 1713 1714 1715 1716 1717 1718 ... 1937 >

Microevolution

Microevolution is the change in allele frequencies that occur over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow, and genetic drift. This change happens over a relatively short (in evolutionary terms) amount of time compared to the changes termed 'macroevolution' which is where greater differences in the population occur.Population genetics is the branch of biology that provides the mathematical structure for the study of the process of microevolution. Ecological genetics concerns itself with observing microevolution in the wild. Typically, observable instances of evolution are examples of microevolution; for example, bacterial strains that have antibiotic resistance.Microevolution over time leads to speciation or the appearance of novel structure, sometimes classified as macroevolution. Macro and microevolution describe fundamentally identical processes on different scales.
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