Gene exchange may nevertheless be inhibited because the offspring are poorly viable or sterile.
The Philadelphia chromosome results from a gene exchange between chromosomes 9 and 22.
These go on to reproduce or to transfer their resistance to others of their species through processes of gene exchange.
Speciation is defined as the evolution of reproductive isolation (reduced gene exchange) between populations (Coyne and Orr 2004).
This represents a second way in which competition, by favoring divergence, would contribute to reduced gene exchange.
Additionally, previous work has demonstrated gene exchange among Neisseria species [8], [35], [36], [37].
This observation indicates that recombination between the two phages facilitated gene exchange between these bacterial genera.
P. lunatus and P. acutifolius appear less capable of gene exchange with related species [40].
This topographical organization should favor gene exchange and, consequently, the irregular distribution of the protein.
dietrichiae clade (Figures 1 and 2) suggests a high rate of gene exchange among the Australian populations (which may be a reflection of its nanandrous breeding system) or a low rate of gene exchange between Australian and New Guinean populations.
BRO genes suggest a putative mechanism for satellite function accretion, whereby features such as hr facilitate xenologous gene exchange.
