id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-017156-ximzvqbm	Forsdyke, Donald R.	Chargaff’s GC rule	2010-05-18		.txt	text/plain	9179	467	55	The model predicts that, for preventing recombination (i.e. creating reproductive isolation), a non-complementarity between the sequences of potentially pairing strands, in itself, might be less important than a noncomplementarity associated with sequence differences that change the pattern of stem-loops. By continuous backcrossing to sylvestris the chromosomes deriv ed from sylvestris can be tested because they form tetrads with the sylvestrisThe surv ival of a duplicate copy of a gene depends on a var iety of factors , including (i) natural selection favouring organisms where a function encoded by the gene is either increased or changed (i.e . Each isochore would have arisen as a random fluctuation in the base composition of a genomic region such that a copy of a duplicated gene that had transposed to that region was able to survive without recombination with the original gene for a sufficient number of generations to allow differentiation between the copy and its original to occur.	./cache/cord-017156-ximzvqbm.txt	./txt/cord-017156-ximzvqbm.txt