Segregation of the univalent X chromosome in the wide-footed treehopper Enchenopa latipes (Say 1824)

Authors

  • Kristen D. Felt Biology Department, Bucknell University, Lewisburg, Pennsylvania
  • Makayla B. Lagerman Biology Department, Bucknell University, Lewisburg, Pennsylvania
  • Samantha Maurer Biology Department, Bucknell University, Lewisburg, Pennsylvania
  • Lu Qian Biology Department, Bucknell University, Lewisburg, Pennsylvania
  • Oluwasefunmi Oluwafemi Biology Department, Bucknell University, Lewisburg, Pennsylvania
  • Noemi Pedraza-Aguado Biology Department, Bucknell University, Lewisburg, Pennsylvania
  • Emily L. Stowe Biology Department, Bucknell University, Lewisburg, Pennsylvania
  • Leocadia V. Paliulis Biology Department, Bucknell University, Lewisburg, Pennsylvania https://orcid.org/0000-0002-8244-7548

DOI:

https://doi.org/10.36253/caryologia-1411

Keywords:

chromosomes, bivalent, univalent, X chromosome, meiosis, Auchenorrhynca, Enchenopa latipes

Abstract

In metaphase I, autosomal bivalents align on the metaphase plate, while naturally-occurring univalent sex chromosomes can display a number of different behaviours depending on cellular conditions. Here we describe the behaviour of the univalent X chromosome in the wide-footed treehopper Enchenopa latipes (Say 1824). We confirm the chromosome number and sex determination method for this species, and that males possess a univalent X chromosome. We show that the univalent X chromosome forms a bipolar attachment to the spindle in metaphase I, and then segregates intact toward one spindle pole in late anaphase I (long after autosomes have initiated poleward movement). Movement of the univalent toward one pole is associated with loss of microtubule connections toward the opposite spindle pole.

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Published

2022-07-07

How to Cite

Felt, K. D., Lagerman, M. B., Maurer, S., Qian, L., Oluwafemi, O., Pedraza-Aguado, N., Stowe, E. L., & Paliulis, L. V. (2022). Segregation of the univalent X chromosome in the wide-footed treehopper Enchenopa latipes (Say 1824). Caryologia, 75(1), 165–171. https://doi.org/10.36253/caryologia-1411

Issue

Vol. 75 No. 1 (2022)

Section

Articles

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Copyright (c) 2022 Leocadia Paliulis, Kristen Felt, Makayla Lagerman, Samantha Maurer, Lu Qian, Oluwasefunmi Oluwafemi, Noemi Pedraza-Aguado, Emily Stowe

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