1. In the context of genetic variation and gene duplication, briefly describe the significance of the...

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Biology

1. In the context of genetic variation and gene duplication,briefly describe the significance of the human hemoglobingenes.
2. Define, compare, and contrast â€œbiological evolutionâ€ andâ€œnatural selectionâ€

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1 Insights into the evolution of hemoglobins and their genes are an abundant idea source regarding hemoglobin function and regulation of globin gene expression This article presents the multiple genes and gene families encoding human globins It summarizes major events in the evolution of the hemoglobin gene clusters and discusses how these studies provide insights into regulation of globin genes Although the genes in and around the like globin gene complex are relatively stable the like globin gene clusters are more dynamic showing evidence of transposition to a new locus and frequent lineagespecific expansions and deletions The cisregulatory modules controlling levels and timing of gene expression are a mix of conserved and lineagespecific DNA perhaps reflecting evolutionary constraint on core regulatory functions shared broadly in mammals and adaptive finetuning in different orders of mammals A wide range of animals vertebrate and invertebrate use hemoglobins to transport oxygen carrying it from lungs gills or other respiratory organs to peripheral tissues which need the See Answer

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