Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Concept 14.4: Microevolution is a change in a population`s gene pool.
Document related concepts
Pharmacogenomics wikipedia , lookup
Heritability of IQ wikipedia , lookup
Polymorphism (biology) wikipedia , lookup
Epigenetics of diabetes Type 2 wikipedia , lookup
Copy-number variation wikipedia , lookup
Koinophilia wikipedia , lookup
Neuronal ceroid lipofuscinosis wikipedia , lookup
Gene therapy of the human retina wikipedia , lookup
Saethre–Chotzen syndrome wikipedia , lookup
Genome evolution wikipedia , lookup
Gene expression profiling wikipedia , lookup
Nutriepigenomics wikipedia , lookup
Vectors in gene therapy wikipedia , lookup
The Selfish Gene wikipedia , lookup
Helitron (biology) wikipedia , lookup
Gene desert wikipedia , lookup
Point mutation wikipedia , lookup
Public health genomics wikipedia , lookup
Therapeutic gene modulation wikipedia , lookup
Genetic drift wikipedia , lookup
Gene nomenclature wikipedia , lookup
Gene therapy wikipedia , lookup
History of genetic engineering wikipedia , lookup
Site-specific recombinase technology wikipedia , lookup
Human genetic variation wikipedia , lookup
Gene expression programming wikipedia , lookup
Genetic engineering wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Genome (book) wikipedia , lookup
Population genetics wikipedia , lookup
Transcript
Concept 14.4: Microevolution is a change in a population’s gene pool. Examples of Microevolution House sparrows adapting to climate in North America Insects evolving resistance to pesticides Gene Pool All of the alleles in all of the individuals that make up a population. z The gene pool is where genetic variation is stored. z Genetic variation is the “raw material” of evolution. z 2 processes that can lead to an increase in genetic variation. 1. Mutation: a change in an organism’s DNA – If this mutation is carried by a gamete, the mutation enters the population’s gene pool. 2 processes that can lead to an increase in genetic variation. 2. Genetic Recombination: the result of the processes of meiosis and fertilization – Alleles in the gene pool are “shuffled” and “dealt” to the offspring. 3 processes that can lead to a change in the gene pool. 1. Genetic Drift: change in the gene pool due to chance events – The smaller a population, the more impact genetic drift can have. 3 processes that can lead to a change in the gene pool. 2. Gene flow: change in the gene pool due to the exchange of genes with another population 3 processes that can lead to a change in the gene pool. 3. Natural Selection: change in the gene pool due to differences in survival and reproductive success among members of the varying population Biological Fitness z The contribution that an individual makes to the gene pool by producing offspring.
