"Salivary gland chromosomes of Drosophilla immigrans sturtevant and Drosophila lucipennis F.J. Linnaeus sampled at San Pablo, Sto. Tomas, Batangas"

Date

3-1988

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Adelina A. Barrion

Abstract

Populations of two fruitflies, sampled at San Pablo, Sto. Tomas, Batangas, were identified as Drosophila immigrans Sturtevant and Drosophila lucipennis F.J. Linnaeus. Lacto-aceto-orcein squash method on the salivary glands of the third-instar larvae revealed the polytene chromosomes of the two species which were compared based on chromosome number, chromosome arm length, banding pattern, and number and locations of puffs and constrictions. Both Drosophila species had a diploid chromosome number, 2n-8, and possessed all six chromosome limbs. common in the two species chromosomes were "shield", the thick onion base, and the "goblet" tip. D. immigrans. chromosome arms were thicker, longer, and had more swellings than those of D. lucipennis. The total number of puffs differed greatly, but the number of constrictions was the same. In certain divisions, band number and locations of specific puffs and constrictions were similar, however, there were still many differences in the banding patterns in the salivary gland chromosomes of the two Drosophila species.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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