1.1 Introduction
Biology education is the systematic study of living organisms, their structures, functions, interactions, and the principles governing life processes, including genetics, evolution, and ecology (Campbell & Reece, 2011). In the context of public health, biology education is essential for imparting knowledge about hereditary diseases, human physiology, and preventive health practices, which directly influence individuals' lifestyle and health choices. Sickle cell disease (SCD) is a hereditary blood disorder characterized by the presence of abnormal hemoglobin, known as hemoglobin S, which causes red blood cells to assume a crescent or “sickle” shape, leading to chronic anemia, pain crises, and increased risk of infections (Adegbola, 2013).
In Nigeria, the prevalence of sickle cell trait is approximately 20–30% of the population, and about 150,000 children are born with SCD annually, making it a significant public health concern (Ohiaeri et al., 2019). As a prelude to other parts of this study, this chapter will discuss the background upon which this study was initiated, the statement of problems that led to this study, the aim and objectives of the study. Others are significance of the study, scope of work, research hypothesis and questions, limitation of the study and definition of terms.
1.2 Background of Study
Sickle cell disease (SCD) is a genetic blood disorder characterized by the presence of abnormal hemoglobin, which causes red blood cells to become rigid and crescent-shaped, leading to impaired blood flow, chronic anemia, and recurrent pain crises. According to Adegbola (2013), SCD is a significant public health concern in Nigeria, with a high prevalence of both carriers and affected individuals, and its burden extends to families, communities, and the healthcare system. Adegbola further reported that limited awareness of the genetic basis and inheritance patterns of the disease contributes to high rates of new SCD cases annually.
Biology education is central to equipping students with the knowledge of human genetics, inheritance patterns, and cellular processes that are fundamental to understanding hereditary disorders. Ogunyemi and Adeyemo (2016) asserted that integrating genetics education into secondary school curricula is crucial for promoting awareness about genetic disorders such as SCD. They stated that students' understanding of genotype compatibility and preventive health practices is essential to reducing the incidence of hereditary diseases.
Community-based organizations such as the Sickle Cell Foundation Nigeria play an active role in public sensitization, genetic counseling, and health education programs. Ohiaeri et al. (2019) affirmed that these programs contribute to improved awareness and informed decision-making, but they contend that outreach efforts often face limitations in coverage, resources, and alignment with formal education curricula, which restricts their overall effectiveness. Despite these initiatives, studies have reported that many young Nigerians remain unaware of their genotype status or the implications of genotype compatibility on family planning.
Eze et al. (2018) stated that misconceptions and lack of proper biology education exacerbate the persistence of SCD, highlighting the need for strategic interventions within formal education to complement public health programs. Furthermore, Campbell and Reece (2011) contended that biology education provides a structured framework for understanding hereditary disorders and their prevention, which is essential in shaping students' attitudes, knowledge, and practices concerning diseases like SCD. This study is set against the backdrop of the urgent need to evaluate the contribution of biology education in raising awareness, improving understanding, and promoting preventive behavior against sickle cell disease.
1.3 Statement of Problems
Investigation revealed that the existing biology curricula in secondary and tertiary schools are often theoretical and fail to adequately emphasize hereditary diseases such as SCD. According to Ogunyemi and Adeyemo (2016), there is insufficient integration of practical genetic counseling concepts and preventive health strategies into biology teaching, leaving students unaware of how genotype compatibility affects the risk of Sickle Cell Disease. Additionally, misconceptions about SCD, low health literacy, and poor understanding of genetics among students persist, showing that both the educational system and community initiatives are insufficiently coordinated to produce significant impact (Eze et al., 2018).
Furthermore, community outreach programs by organizations like the Sickle Cell Foundation Nigeria, though valuable, face challenges such as limited resources, lack of synergy with formal education, and uneven coverage, which reduces their overall effectiveness (Ohiaeri et al., 2019). It is against this backdrop that this study seeks to investigate how biology education contributes to public awareness, knowledge acquisition, and preventive behavior regarding SCD.
1.4 Aim and Objectives of Study
The aim of this study is to evaluate the role of biology education in promoting awareness, and preventive behavior against sickle cell disease in Nigeria. In achieving this aim, the following specific objectives were laid out as follows:
- To determine the extent to which biology education influences students' attitudes towards genotype screening and preventive practices.
- To examine the level of knowledge of students regarding sickle cell disease in relation to biology education.
- To assess the role of the Sickle Cell Foundation Nigeria in complementing biology education to increase awareness of SCD.
- To identify challenges in integrating sickle cell education into formal biology curricula and public outreach programs.
1.5 Research Questions
Based on the objectives above, the study seeks to answer the following questions:
- What is the level of knowledge of students regarding sickle cell disease as influenced by biology education?
- To what extent does biology education affect students' attitudes towards genotype screening and preventive practices?
- How does the Sickle Cell Foundation Nigeria contribute to complementing biology education in raising awareness of SCD?
- What challenges are associated with integrating sickle cell education into formal biology curricula and outreach programs?
1.6 Research Hypothesis
In order to pursue the objective of this study, the following generalized statements have been designed to guide and aids in obtaining the result for the experiment to be conducted. For this work, the null hypothesis will be represented with H0 while the alternative hypothesis will be represented with hypothesis H1.
- H01: There is no significant relationship between biology education and students' knowledge, attitudes, and preventive practices regarding sickle cell disease.
- H02: Biology education significantly improves students' knowledge, attitudes, and preventive practices regarding sickle cell disease.
1.7 Significance of Study
It is believed that at the completion of the study, the findings will provide educators with insights on effective methods to teach genetics and hereditary disease prevention within biology curricula. The study will also guide organizations such as the Sickle Cell Foundation Nigeria on how to better integrate outreach programs with formal education to maximize impact.
Furthermore, the study will inform policymakers on areas of improvement in curriculum design and public health education strategies to combat SCD.
Lastly, the findings will serve as a reference for future research on biology education, public health, and hereditary disease prevention in Nigeria.
1.8 Scope of Study
The study focuses on the role of biology education in educating against sickle cell disease, with a specific case study of the Sickle Cell Foundation Nigeria in Lagos State.
1.9 Limitations of the Study
During the course of this study, there were some problems encountered which stood as limitations to the research work. Some of the limitations include:
- Time Constraint: The time frame given to accomplish this project was very short due to school academic calendar and it was carried out under pressure which made the researcher not to implement some necessary features.
- Financial Constraint: Insufficient fund tends to impede the efficiency of the researcher in sourcing for the relevant materials, literature or information and in the process of data collection (internet, questionnaire and interview).
- Initial Cooperation Delay from Respondents: A particular limitation of this work came as a result of the respondent refusal to offer their cooperation at the initial time they were contacted. This contributed in making the success of this research study difficult.
1.10 Definition of Terms
Biology Education: Refers to the teaching and learning of biological concepts including genetics, cell biology, and human physiology, aimed at enhancing knowledge, skills, and attitudes towards health and disease prevention (Campbell & Reece, 2011).
Sickle Cell Disease (SCD): A hereditary blood disorder characterized by abnormal hemoglobin S, causing red blood cells to assume a crescent shape, leading to anemia, pain crises, and other health complications (Adegbola, 2013).
Genotype Screening: The process of identifying an individual's genetic makeup to determine the risk of inheriting or passing on genetic disorders such as SCD (Ogunyemi & Adeyemo, 2016).
Preventive Practices: Actions taken to reduce the risk of developing or transmitting SCD, including genotype awareness, counseling, and informed reproductive choices (Ohiaeri et al., 2019).
Public Awareness: Knowledge and understanding among the general population regarding SCD, its inheritance, and prevention strategies (Eze et al., 2018).
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