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Browsing Theses and Dissertations (Genetics) by Type "Dissertation"
Now showing items 1-20 of 137
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(University of Pretoria, 2017)Increased anthropogenic activities such as urbanisation and the bushmeat trade increase the degree of contact humans have with non-human primates. Zoonotic pathogens have increased the risk of disease emergence significantly. ...
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(University of Pretoria, 2009-07-16)Pinus patula is the single most important commercial plantation forest tree species in South Africa. It accounts for 52% approximately (700,000 ha) of total commercial plantation area in the country and is utilised for saw ...
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(University of Pretoria, 2013)No abstract
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(University of Pretoria, 2009-08-11)Eucalyptus urophylla is one of the most extensively used forest tree species in plantation forestry worldwide. Commonly, E. urophylla is used in hybrid combinations with species possessing better wood properties largely ...
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(University of Pretoria, 2009-07-15)Lignin is a highly abundant aromatic biopolymer deposited during the final stages of secondary cell wall formation in plants and it constitutes a substantial proportion of the dry weight of woody plant stems. Lignin ...
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(University of Pretoria, 2011-01-09)Please read the abstract in the dissertation
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(University of Pretoria, 2019)Cancer is a major cause of death globally and the incidence of the disease is expected to increase in coming years. It is predicted that 20 million new cases of cancer will be observed annually as early as 2025, rising ...
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(2012-12-14)Previous studies have claimed that the Afrikaner population of South Africa contains approximately 7% non-European DNA. It is thus ironic that Afrikaners practiced racial separation and discrimination against non-Europeans, ...
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(University of Pretoria, 2008-07-15)This study represents the first comprehensive analysis of gene regulation underlying the distinct categories of resistance afforded to wheat (Triticum aestivum, L.) by different Dn genes. Russian wheat aphid (Diuraphis ...
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(University of Pretoria, 2009-09-16)The prediction of the performance of hybrid plants as production material is complicated by the genetic structure of the hybrid population. Fundamental quantitative genetic concepts are defined with respect to disomic, ...
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(University of Pretoria, 2018)Desert environments are characterised by harsh conditions and possess low biodiversity largely caused by abiotic factors such as; low precipitation, soil organic matter, high temperatures, high levels of evapo-transpiration, ...
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(University of Pretoria, 2017)Extensive research has been directed towards assessing the belief that facial appearance indicates health, particularly immunity. Many studies have linked facial appearance in the non-clinical populations with various ...
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(University of Pretoria, 2013-04-25)African horsesickness virus (AHSV) belongs to the Orbivirus genus in the family Reoviridae. This non-enveloped virus consists of an outer capsid formed by two structural proteins, VP2 and VP5, and an inner core formed by ...
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(University of Pretoria, 2007-02-13)Genetic variances and heritabilities in a cloned Eucalyptus grandis breeding population of families derived from open pollinated selections were estimated and the results are presented. The genetic variance was partitioned ...
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(University of Pretoria, 2008-08-11)A striking variation in the behaviour of pollinating fig wasps (Agonidae) is the occurrence of male fighting in some species while in others it is completely absent. Fighting behaviour was investigated at two levels. ...
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(University of Pretoria, 2006-12-07)African horsesickness is caused by the AHSV, a member of the genus Orbivirus, family Reoviridae. Nine serotypes have been identified. The viral genome consists of ten double stranded (ds) RNA segments encoding at least 7 ...
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(University of Pretoria, 2006-04-07)African horsesickness virus (AHSV) is a member of the Orbivirus genus and part of the family Reoviridae. It is a double stranded RNA virus with ten genome segments that encode seven structural and four nonstructural proteins. ...
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(University of Pretoria, 2011-11-01)Germ-line mutations within the breast cancer susceptibility genes, BRCA1 and BRCA2 are responsible for inherited susceptibility to breast and ovarian cancer. A wide spectrum of pathogenic mutations has been identified ...
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(University of Pretoria, 2020)Lepidoptera is the second largest insect order, following Coleoptera, with approximately 180_000 species of moths and butterflies described to date. The destructive larval stage, along with their abundance and distribution, ...
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(University of Pretoria, 2014)Rhipicephalus microplus belongs to the Ixodidae, the largest family of ticks, which are of great economic importance due to their negative socio-economic impact on agriculture (BROUQUI 2011; PORTO NETOA et al. 2011; ...
Now showing items 1-20 of 137