Search results
This chapter introduces some of the methodologies used in estimating genetic distances, how we analyze them, and how we portray our results in a graphical fashion amenable for interpretation. Underlying most estimates of genetic distance are sets of geometric and/or evolutionary assumptions.
17 gru 2019 · As a connection-free approach, principal component analysis (PCA) is used to summarize the distance matrix, which records distances between each combination of samples.
25 cze 2019 · The basic idea of GREML is to estimate a matrix of genetic relationships among individuals who are not socially related in the sense of being family members. Based on the matrix, the genomic contribution (i.e., collective influence of all genetic variants across the whole genome) can be estimated.
24 maj 2017 · In this simulation study, we analyze the behavior of different genetic distances in Island (null hypothesis) and stepping stone models displaying varying neighborhood sizes.
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. Populations with many similar alleles have small genetic distances.
A common assumption about genetic distance is that it is a measure of the evolutionary divergence between copies of homologous genes which share a common ancestor. Under this assumption. an ideal measure of genetic distance is where the difference between the two...
The main principle of distance-based methods for phylogenetic reconstruction is the use of the genetic distances that have been derived from the sequence alignment. These distances are usually provided in a distance matrix.
