Mitochondrial DNA Size Variation Within Individual Crickets

Overview

Journal Science

Specialty Science

Date 1985 Jun 21

PMID 17814488

Citations 40

Authors

R G HARRISON

D M Rand

W C Wheeler

Affiliations

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Abstract

The mitochondrial DNA's of two closely related cricket species (genus Gryllus) share a size polymorphism as evidenced by analysis of restriction fragment patterns. Moreover, 12 of 100 field-collected crickets are heteroplasmic, that is these individuals have more than one size class of mitochondrial DNA. No heteroplasmy for restriction site variation is observed. Intraindividual variation in cricket mitochondrial DNA provides a useful marker for studying the transmission genetics of mitochondrial DNA. Available data on patterns of variation in mothers and offspring suggest that random segregation of mitochondrial DNA variants does not occur rapidly in cricket germ-cell lineages.

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