Genetic Recombination, Gene Linkage, and Applied Genetics

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What is genetic recombination?

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The process by which genetic material is physically mixed during meiosis, resulting in offspring with combinations of traits that differ from those of the parents.

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What is gene linkage?

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When genes located close to each other on the same chromosome tend to travel together during meiosis.

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What is inbreeding?

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Breeding 2 closely related organisms.

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What is a Test Cross?

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Breeding an organism with a known genotype with an unknown genotype and using the offspring to determine the unknown.

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What is the advantage of genetic variation?

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Increases the chances of survival and adaptability of a species.

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What are harmful recessive traits?

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Traits that can cause genetic disorders when two copies of the recessive allele are present.

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What is the significance of crossing over in meiosis?

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It increases genetic diversity by exchanging genetic material between homologous chromosomes.

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What is the difference between dominant and recessive traits?

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Dominant traits are expressed in the phenotype even if only one allele is present, while recessive traits require two copies to be expressed.

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What is the role of chromosomes in heredity?

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Chromosomes carry genes, which are the units of heredity that determine traits.

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What is the purpose of selective breeding?

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To enhance desired traits in offspring by choosing specific parents.