Beyene, Dereje (PhD)Mulugeta, Tseganeh2022-01-242023-11-092022-01-242023-11-092021-11-03http://etd.aau.edu.et/handle/123456789/29605Morphogenetic characters are physical characters of an individual which are inherited and expressed in different ways. Therefore, this makes it ideal to know the extent of variation among population. However, few studies have been conducted in Ethiopia to know the extent of variation that exist in different races. The study was focused on six morphogenetic characteristics such as tongue rolling, ear lobe attachment, hair line distribution, bent little finger, hitchhiker’s thumb, and palmaris longus muscle (PLM) among the students of kale primary school Addis Ababa Ethiopia. The aim of this study was to find out the inheritance variation of some morphogenetic traits among children of kale primary school having age between 13-18 years. A cross-sectional study was carried out on 325(170 males and 155 females) volunteer students to explore the extent of variation in some morphogenetic traits and to give awareness about the application of morphological variation of the human external ear and that could be translatable for forensic recording of fugitives. The investigator collected the required information by observing the subject and the result was analyzed and association study of traits were conducted by using chi-square test of independence with alpha value of 5% level of significance to identify which trait has association with gender. The study presented distribution of traits in the following order, widow’s peak 116(35.7%) where most males 63(37.1%) exhibit this trait, tongue rolling 242(74.5%) and it was dominated by males 128(75.3%), free ear lobe 217(66.8%) it was also found more in males 115(67.6%), straight thumb 188(57.8%) the difference between gender was found marginal, bent little finger 59(18.2%) which was dominated by females 42(27.1%) and PLM presence 313(96.3%) and absence of this muscle was frequently observed in females 10(6.5%) and as we understand from this study, 96% were found to have PLM muscle, which indicates that there is a sufficient tendon that is essential for various medical procedures. Association evaluation showed no significant association was found between all morphogenetic traits and ages, however, it was found that there is significant association between gender and bent little finger(Χ 2=15.950, p<0.001) and between gender and absence of PLM(Χ 2=6.345, p<0.005). Since the study was conducted in heterogeneous population it is suitable for biomedical, anthropological and forensic studies.enDominant GenesRecessive GenesHitchhiker's ThumbHuman TraitsMorphogenetic TraitsPalmaris Longus Muscle (Plm)Thesis