Question
The concept of synteny is best demonstrated in which of the following pairs of organisms? Humans and zebrafish Yeast and bacteria Plants and yeast Mice and humans Fruitflies and zebrafish
Solution
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Lana
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Answer
The concept of synteny (conservation of blocks of order of genes within two sets of chromosomes) is best demonstrated in **mice and humans**.Synteny is more likely to be observed in closely related species. While all the listed pairs share some degree of genetic homology, mice and humans, both mammals, share a much more recent common ancestor than the other pairs. This closer evolutionary relationship results in larger stretches of their genomes exhibiting synteny. The other pairings are more distantly related, and thus, more extensive genomic rearrangements would have occurred over time, disrupting synteny to a greater degree.