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An entire gene family may also be lost, or gained through de novo gene birth, by such extensive divergence such that a gene is considered part of a new family, or by horizontal gene transfer. When the number of genes per genome remains relatively constant, this implies that genes are gained and lost at relatively same rates.
This is a list of gene families or gene complexes, i.e. sets of genes which are related ancestrally and often serve similar biological functions.These gene families typically encode functionally related proteins, and sometimes the term gene families is a shorthand for the sets of proteins that the genes encode.
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 ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Science of genes, heredity, and variation in living organisms This article is about the general scientific term. For the scientific journal, see Genetics (journal). For a more accessible and less technical introduction to this topic, see Introduction to genetics. For the Meghan Trainor ...
Genetic disorders are diseases that are caused by a single allele of a gene and are inherited in families. These include Huntington's disease , cystic fibrosis or Duchenne muscular dystrophy . Cystic fibrosis, for example, is caused by mutations in a single gene called CFTR and is inherited as a recessive trait.
Gene therapy has allowed several children born with inherited deafness to hear. On Tuesday, the Children's Hospital of Philadelphia announced similar improvements in an 11-year-old boy treated there.
This is the gene described in The Selfish Gene. [9] More thorough discussions of this version of a gene can be found in the articles Genetics and Gene-centered view of evolution. The molecular gene definition is more commonly used across biochemistry, molecular biology, and most of genetics—the gene that is described in terms of DNA sequence. [1]
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