Karyotype of the egg chromosomes of the long- boddiedcellar spider, Pholcus phalangioides (Fuesslin) (Aranea : Pholcidae).
Date
3-1994
Degree
Bachelor of Science in Biology
Major Course
Major in Cell Biology
College
College of Arts and Sciences (CAS)
Adviser/Committee Chair
Adelina A. Barrion
Abstract
Mitotic cells and chromosomes of the long-bodied cellar spider. Pholcus phalangioides (Fuesslin) were observed using the lactoacetoorcein-egg squash technique. The different stages of mitosis, namely: prophase, metaphase, anaphase and telophase were identified and characterized. Mitosis in P.phalangioides was normal and regular. The most frequently encountered cells were at prophase. While the cells at telophase were least encountered. the chromosome number of P.phalangioides was 2n+22 (20 autosomes + xx(o)/xy(o)). The mean mitotic index was 57.2%. Chromosomes were monocentric and metacentric. The thin and elongated chromosomes were arranged in pairs and in decreasing lengths to form the kayogram. Relative mean length of chromosomes ranged from 0.028 to 0..65.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Call Number
Thesis
Recommended Citation
Alvarez, Reia Lei R., "Karyotype of the egg chromosomes of the long- boddiedcellar spider, Pholcus phalangioides (Fuesslin) (Aranea : Pholcidae)." (1994). Undergraduate Theses. 10714.
https://www.ukdr.uplb.edu.ph/etd-undergrad/10714
Document Type
Thesis