Agricultural Science Grade 12 Genetics Notes Free pdf Download For Grade 12 students delving into the realm of Agricultural Science, understanding the principles of genetics is akin to unlocking the secrets of nature’s blueprint. This Educational Article aims to provide a comprehensive overview of essential Grade 12 Agricultural Science genetics notes, shedding light on the fascinating world of heredity, DNA, and the genetic code.
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Agricultural Science Grade 12 Genetics Notes
Key Terminologies you should know for the exam:
In Basic Genetics it is very important to know the genetics terms in order to be able to do most of the questions. The following is a list of terms and their definitions in Basic Genetics:
- Allele – variations of the same gene
- Atavism – reappearance of a characteristic in an organism after a period of absence
- Biometrics – the use of statistics in biology
- Biotechnology – the use of organisms to produce useful substances
- Breeding – process of producing plants or animals by sexual reproduction
- Cloning – a research activity that creates a copy of some biological entity (a gene/cell/organism)
- Dihybrid cross – a genetic cross that involves 2 pairs of contrasting characteristics
- Dominant – an allele that masks the effect of another & is expressed in the appearance of an individual
- Co-dominance – type of inheritance where both alleles are dominant and fully expressed in the phenotype
- Incomplete dominance – type of inheritance where both alleles are partially expressed, often producing an intermediate characteristic.
- Epistasis – masking of the phenotypic effect of alleles at one gene by alleles of another gene
- Gametes – a reproductive cell having a haploid number of chromosomes
- Gene – unit of heredity that carries information for each characteristic of an organism
- Genetics – study of inheritance/ genes
- Genotype -genetic makeup of an organism
Downloadable pdf note: