Often times, some of our produce such as pulses, cereals, tubercrops, fish and meat get rotten and bad especially when they are not stored or properly stored. Hence, several methods or techniques of storage have been adopted in other to curb the situation of having spoilt and bad produce. These methods are different for different kind of produce. That is, each produce (cereals, tubercrops, fish, meat, etc) have their own special method or techniques of storage.
Population genetics’ is defined in many ways. In general, we can say that population genetics is the study of the application of Mendel’s laws and other genetic principles to entire populations of organisms instead of just to individuals. These can be found in this book along with knowing about phenotype, genotype and lot more.
If, for any reason, a population becomes homogeneous, evolution would not occur. Thus, constant change essentially depends on new variation. A genetic population is the aggregate of allelic frequencies of all genes in that population. Populations change or evolve because their gene frequencies experience change. Several factors can produce changes in fitness—the capability of an individual to survive until reproduction is achieved. If the fitness of an individual in a population changes, the genotypes in the subsequent generation will not be directly related to the gene frequencies of the former population, thus driving the population to evolve. Because changes in populations require changes in gene frequencies, we must understand how these frequencies can change. The primary causes of change include: mutation, migration, recombination, selection and drift.
