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The following outline is provided as an overview of and topical guide to genetics: . Genetics – science of genes, heredity, and variation in living organisms. [1] [2] Genetics deals with the molecular structure and function of genes, and gene behavior in context of a cell or organism (e.g. dominance and epigenetics), patterns of inheritance from parent to offspring, and gene distribution ...
In terms of genetics, this is called an increase in allele frequency. Alleles become more or less common either by chance in a process called genetic drift or by natural selection . [ 13 ] In natural selection, if an allele makes it more likely for an organism to survive and reproduce, then over time this allele becomes more common.
Genetics is the study of genes, genetic variation, and heredity in organisms. [ 1 ] [ 2 ] [ 3 ] It is an important branch in biology because heredity is vital to organisms' evolution . Gregor Mendel , a Moravian Augustinian friar working in the 19th century in Brno , was the first to study genetics scientifically.
Genetics and the Origin of Species provided the outline for a synthesis of genetics with evolution, and was enthusiastically received by both geneticists and naturalists. Dobzhansky laid out an advanced account of the evolutionary process in genetic terms, and he backed up his work with experimental evidence supporting the theoretical arguments.
In genetics, gene expression is the most fundamental level at which the genotype gives rise to the phenotype, i.e. observable trait. The genetic information stored in DNA represents the genotype, whereas the phenotype results from the "interpretation" of that information.
Genetics for Beginners, republished as Introducing Genetics, is a 1993 graphic study guide to Genetics written by Steve Jones and illustrated by Borin Van Loon.The volume, according to the publisher's website, "takes readers on a journey through this new science to the discovery of DNA and the heart of the human gene map," and, "gives us the information," to, "make moral decisions where ...
Each OMIM entry is given a unique six-digit identifier [9] as summarized below: 100000–299999: Autosomal loci or phenotypes (entries created before May 15, 1994) 300000–399999: X-linked loci or phenotypes; 400000–499999: Y-linked loci or phenotypes; 500000–599999: Mitochondrial loci or phenotypes
[9] Genomic imprinting, which determines whether some genes inherited from the mother and father get expressed. [10] The expressivity of a gene can be influenced by the environmental conditions. [11] For example, pigmentation in the fur of Himalayan rabbits is determined by the C gene, the activity of which is dependent on temperature. [12]