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Joined 2026-09-21 Message
Incoming links: Aracely A. Lutes
Aracely A. Lutes 2026-11-05
Aracely A. Lutes, whose university-hosted CV identifies her earlier publications under the name Aracely A. Newton, is a biologist who studied parthenogenesis in whiptail lizards. Her doctoral work concerned reproduction in these animals, linking meiosis, chromosomes and the inheritance of alleles.[ref]
Curriculum vitae of Aracely A. Newton. Page1: dissertation and Publications entries3–4 explicitly labelled Lutes(Newton)
A 2010 study with collaborators addressed a puzzle: how can an animal reproduce without fertilization while retaining heterozygosity? The studied lizards entered meiosis with a doubled chromosome complement. Pairing between genetically identical sister chromosomes, rather than the two different homologous chromosomes, provided a route to preserve inherited allele combinations.[ref]
Sister chromosome pairing maintains heterozygosity in parthenogenetic lizards by Aracely A. Lutes and others. Abstract and Figure3: chromosome doubling and alternative pairing patterns
The crucial evidence distinguished which copies paired. Fluorescence in situ hybridization marked repeated DNA sequences present on chromosomes from one ancestral species but absent from those of the other. Paired marker signals in meiotic preparations supported sister chromosome pairing. For example, matching an A-derived copy with its duplicate can leave both the A-derived and B-derived versions available to the resulting egg, preserving heterozygosity.[ref]
Sister chromosome pairing maintains heterozygosity in parthenogenetic lizards by Aracely A. Lutes and others. Figure4 and Results: internal telomeric-repeat probes distinguishing sisters from homologues
