In September 6 Nature, Sofia Berlin and Hans Ellegren from Uppsala University, Sweden, examine the controversial clonal inheritance theory for vertebrate mitochondrial DNA (mtDNA) by following co-inheritance of a female-specific nuclear DNA marker (Nature 2001, 413:37-38).They examined the avian W chromosome, most of which is non-recombining and therefore clonally transmitted by females. A polymorphic (CA)n repeat, NVHfp49, on the W chromosome of 53 female peregrine falcons (Falco peregrinus) an
In September 6
They examined the avian W chromosome, most of which is non-recombining and therefore clonally transmitted by females. A polymorphic (CA)n repeat,
These data support the hypothesis of clonal inheritance of mtDNA from mothers to daughters without recombination.
The liquid world of fetal development provides a rich source of nutrition and protection tailored to meet the needs of the growing fetus.
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