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Cytological and karyomorphological characteristics of the egg chromosomes of an Orb-weaver spider, Nephila maculata Fabricius (AraneaeL araneidae) / Judy Eloisa D. Maniquis

By:

Maniquis, Judy Eloisa D

Material type: Text

TextLanguage: English Publication details: 2000Description: 34 leavesSubject(s):

Undergraduate Thesis BIO200

Dissertation note: Thesis (BS Biology) -- University of the Philippines Mindanao, 2000 Summary: Egg masses collected from Nephila maculate Fabricius which were fixed in Carnoy?s solution and stained with giemsa dye revealed the following cellular and chromosomal features: mitioc index of 59.2%; interphase and prophase cells with round nuclei to the conventional stages that cells had undergone and the expectations to happen in each cell stage. Cell counts of mitotic cells revealed metaphase to be the most frequently occurring stage and telophase being the least. Karyogram of the chromosomes revealed monocentric chromosomes and indistinct centromeres. Chromosomes number was 2n = 24 (11 II A + X1X2). The X1X2 were not identified in the karyogram, however, it was assumed since the specimens used were female. The total average length of the chromosomes were computed to be 5.075 cm. and the mean of the average relative length was 0.08335cm under 1000X magnification with zoom less camera and picture enlarged to 5R

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Item type	Current library	Collection	Call number	Status	Date due	Barcode
Thesis	University Library	Non-Circulation	LG993.5 2000 B4 M355 (Browse shelf(Opens below))	Available		3UPML00020761
Thesis	University Library	Reference/Room-Use Only	LG993.5 2000 B4 M355 (Browse shelf(Opens below))	Available		3UPML00010997

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Thesis (BS Biology) -- University of the Philippines Mindanao, 2000

Egg masses collected from Nephila maculate Fabricius which were fixed in Carnoy?s solution and stained with giemsa dye revealed the following cellular and chromosomal features: mitioc index of 59.2%; interphase and prophase cells with round nuclei to the conventional stages that cells had undergone and the expectations to happen in each cell stage. Cell counts of mitotic cells revealed metaphase to be the most frequently occurring stage and telophase being the least. Karyogram of the chromosomes revealed monocentric chromosomes and indistinct centromeres. Chromosomes number was 2n = 24 (11 II A + X1X2). The X1X2 were not identified in the karyogram, however, it was assumed since the specimens used were female. The total average length of the chromosomes were computed to be 5.075 cm. and the mean of the average relative length was 0.08335cm under 1000X magnification with zoom less camera and picture enlarged to 5R

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