Nurturing Life Sciences
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Formation of mature B-cell
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#Unit 2. Cellular Organization
A gene family is defined as a group of genes that encode related or identical products as a result of gene-duplication events.
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Sequences that arose because of speciation are described as orthologous
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A mutation that confers a more advantageous phenotype to an organism, relative to individuals in the same population without the mutation, called as positive selection.
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Fold potential (measured in negative units) is high (more negative) in introns, and low (more positive) in exons.
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An actual overlapping gene occurs when the same sequence of DNA encodes two nonhomologous proteins because it uses more than one reading frame.
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We use the principle of parsimony in comparing the organization of orthologous genes by assuming that a common feature predates the evolutionary separation of the two species.