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Centimorgan. In genetics, a centimorgan (abbreviated cM) or map unit (m.u.) is a unit for measuring genetic linkage. It is defined as the distance between chromosome positions (also termed loci or markers) for which the expected average number of intervening chromosomal crossovers in a single generation is 0.01.
Figure 1: Genetic distance map by Cavalli-Sforza et al. (1994) [1] Genetic distance is a measure of the genetic divergence between species or between populations within a species, whether the distance measures time from common ancestor or degree of differentiation. [2] Populations with many similar alleles have small genetic distances.
The genetic history of the Indigenous peoples of the Americas is divided into two distinct periods: the initial peopling of the Americas from about 20,000 to 14,000 years ago (20–14 kya), and European contact, after about 500 years ago. [ 1 ][ 2 ] The first period of the genetic history of Indigenous Americans is the determinant factor for ...
List of Allegiant Air destinations. Allegiant Air ' s scheduled destinations (excluding charter operations) are listed below. Its reservation system does not allow travelers to book multi-segment flights (for example, Oakland to Cleveland via Phoenix even though the airline operates both sectors). [1]
The distance between the genes (map units) are equal to the percentage of crossing-over events that occurs between different alleles. D. melanogaster was among the first organisms used for genetic analysis , and today it is one of the most widely used and genetically best-known of all eukaryotic organisms.
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