Department Of Cell Biology & Genetics

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https://ir.unilag.edu.ng/handle/123456789/3374
The department of Biology was instituted in 1966 as the third department in the defunct School of Biological Sciences. The other departments were Botany and Zoology. In its early years, the department was responsible for the Preliminary Biology, Medicine and related disciplines, NCE (Biology) and B.Sc. Education Biology programmes. Consequent on a deliberate recruitment of the requisite staff by the department, the senate in 1971/72 approved a B.Sc. (Hons) degree in Biology.

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Browsing Department Of Cell Biology & Genetics by Author "Adekoya, K. O."

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  • Item
    Open Access
    Inversion Polymorphism in Two Populations of Drosophila melanogaster in Lagos State, Nigeria
    (Faculty of Science, University of Lagos., 2010) Adefenwa, M. A.; Williams, G. O.; Oboh, B.O.; Adekoya, K. O.
    Two different natural populations of Drosophila melanogaster were surveyed to determine the types of inversions present by examining the salivary gland chromosomes of third instar larvae. Seven different inversions were detected in populations, Tejuosho market and Bariga market (Lagos, south-western Nigeria) populations. All inversions detected were single, paracentric and autosomal. The inversions observed were distributed in the arms of the chromosomes as follows: two in the left arm of chromosome 2 (2L), one in the right arm of chromosome 2 (2R), two in the left arm of chromosome 3 (3L) and two in the right arm of chromosome 3 (3R). Some inversions occurred together with other inversions in the same larva and this occurrence was probably just due to chance but also indicates that such conditions were not lethal. Some of the inversions detected in this study had been recorded by earlier researchers in some parts of south-eastern Nigeria and south-western Nigeria. The occurrence of similar inversions in these regions may be evidence that the inversions are not recent. This similarity in inversions also suggests that there is or had been migration from one place to the other or the inversions originated somewhere else and had been transported to other places.
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    Open Access
    MORPHOLOGICAL CHARACTERIZATION OF GARCINIA KOLA HACKEL (BITTER KOLA) FROM SOUTHERN NIGERIA
    (Annals of West University of Timişoara, ser. Biology, 2018) Ashiru, M. A.; Sifau, M. O.; Ogunkanmi, L. A.; Adekoya, K. O.; Oboh, B. O.
    Garcinia kola is an important indigenous fruit tree that has a huge medicinal and economic value in Nigeria. It is often referred to as ‘wonder plant’ because all its parts have specific medicinal properties and have been employed traditionally for the treatment of diverse ailments. This study is aimed to determine the genetic variation that exists between and within G.kola species in selected states of Southern part of Nigeria using morphological and morphometric markers. Phenotypic traits were measured on site according to descriptors of tropical fruits by Bioversity International in the course of an exploration. The geographical positioning system (GPS) data of individual trees were also documented. Measurements were taken with the aid of a meter rule and direct observations. Data obtained were subjected to one-way analysis of variance and revealed F-value of 58.49 and a corresponding p-value ˃0.000. The result of the descriptive statistics also shows that diameter at breast height (DBH), crown diameters (CD-) ranged from 2-8m, while leaf related traits revealed that leaf length (LL), leaf width, average petiole length (APTL) and index of leaf length and leaf width ranged from 2.8-1, 1.66-6.66 ,0.6-1.48, 1-7.12 respectively. Also mean and standard deviation of DBH, CD, APTL, LL, LW, LL /LW are 4.63±1.44, 1.95±0.59, 1.04±0.33, 11.51±3.39, 1.85±1.77 and 2.78±0.36 respectively. The study revealed high variability between and within the different G.kola individuals sampled from Southern Nigeria.
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    Open Access
    Types and frequency of fingerprint minutiae in individuals of Igbo and Yoruba ethnic groups of Nigeria
    (Faculty of Science, University of Ruhuna, 2019-04-29) Akpan, U. U.; Awe, T.; Idowu, D. O.; Adekoya, K. O.
    The population distribution of fingerprint minutiae is necessary to improve efficiency of fingerprints in identifying individuals in a population-specific manner. The objective of the study was to determine the distribution of different types of minutiae fingerprint feature in two Nigerian ethnic populations. Fingerprints from forty-four (44) Igbo individuals and forty-four (44) Yoruba individuals, both of Nigeria were collected using a manual impression method that uses ink pad and paper. Of all the minutiae types considered, bifurcations and convergences accounted for 54.85% of the study’s total minutiae counts (TMC). This study shows that the Igbo ethnic group consistently have higher count of all minutiae types and higher total minutiae counts for both hands statistically significant at P<0.001. We found association between gender and minutiae distribution in some minutiae types including fragment/point or dot (FP), overlap (OL) and break (BR). This work revealed important variations among individuals from the two ethnic groups on the distribution and variability of minutiae in Nigeria populations.