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. 1989 Jun;122(2):387–396. doi: 10.1093/genetics/122.2.387

Rapid Spread of Transposable P Elements in Experimental Populations of Drosophila Melanogaster

A G Good 1, G A Meister 1, H W Brock 1, T A Grigliatti 1, D A Hickey 1
PMCID: PMC1203710  PMID: 17246499

Abstract

The invasion of P elements in natural populations of Drosophila melanogaster was modeled by establishing laboratory populations with 1%, 5% and 10% P genomes and monitoring the populations for 20 generations. In one experiment, the ability of flies to either induce or suppress gonadal sterility in different generations was correlated with the amount of P element DNA. In a second experiment, the percentage of genomes that contained P elements, and the distribution of P elements among individual flies was monitored. The ability to induce gonadal dysgenesis increased rapidly each generation. However, the increase in P cytotype lagged behind by five to ten generations. The total amount of P element DNA and the frequency of flies containing P elements increased each generation. The number of P elements within individual genomes decreased initially, but then increased. Finally, the distribution of P elements within the genomes of individuals from later generations varied considerably, and this pattern differed from the parental P strain. These results suggest that the interaction between the assortment and recombination of chromosomal segments, and multiplicative transposition could result in the rapid spread of P elements in natural populations.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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