DNA precursor asymmetries, replication fidelity, and variable genome evolution
Article Abstract:
Replication-active deoxyribonucleoside triphosphate (dNTP) pools in T4 DNA synthesis were studied by the rII mutation reversion appproach. Result show that a localized, rapidly replenished minute quantity of hydroxymethyl-deoxycytosine triphosphate induces replication in prokaryotic systems. On the other hand, eukaryotic systems have a highly asymmetric normal dNTP replication pool, with deoxyguanosine triphosphate found at a subsaturating concentration. It is speculated that this assymetry contributes to the differential evolution rate of different genes in the same genome.
Publication Name: BioEssays
Subject: Biological sciences
ISSN: 0265-9247
Year: 1992
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Theoretical morphology of developmental asymmetries
Article Abstract:
Morphology of hard parts is the only evidence that fossil material provide and to understand the morphological organization of living and fossil organisms a theoretical tool called Morphospace is used. It is suggested that ontogenetic trajectories can be used as the generative functions that build morphospaces.
Publication Name: BioEssays
Subject: Biological sciences
ISSN: 0265-9247
Year: 2004
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The evolution of floral homeotic gene function
Article Abstract:
This review examines the role of plant MADS-box genes, encoding transcriptional regulators, in the developmental processes. Specifically, involvement of these genes in the angiosperm lineages and in the genetic diversification-led morphological manifestations are discussed.
Publication Name: BioEssays
Subject: Biological sciences
ISSN: 0265-9247
Year: 2003
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- Abstracts: Characterization of interpopulation genetic variability in three hybrid maize populations. Physical mapping of rRNA genes in Medicago sativa and M. glomerata by fluorescent in situ hybridization
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