kin selection Natural selection of genes that tend to cause the individuals bearing them to be altruistic to close relatives. These relatives therefore have a higher probability of bearing identical copies of those same genes than do other members of the population. Thus kin selection for a gene that tends to cause an animal to share food with a close relative will result in the gene being spread through the population because it (unconsciously) benefits itself. The more closely two animals are related, the higher the probability that they share some identical genes and therefore the more closely their interests coincide. Parental care is a special case of kin selection. See inclusive fitness.
More From encyclopedia.com
Inclusive Fitness , inclusive fitness The adaptive value (fitness) of an individual, taking account not only of that individual's own success, but also of the success of… Selfish Dna , Evolutionary biologists increasingly accept that genes are selfish. But what does this mean? Clearly genes do not have personal motivations, and even… Selection , Selection refers to an evolutionary pressure that is the result of a combination of environmental and genetic pressures that affect the ability of an… Pseudogenes , Pseudogenes are defective copies of functional genes. These may be partial or complete duplicates derived from polypeptide-encoding genes or RNA gene… Regulator Gene , regulatory gene In the operon theory of gene regulation, a gene that is involved in switching on or off the transcription of structural genes. When t… gene family , gene family A group of similar or identical genes, usually along the same chromosome, that originate by gene duplication of a single original gene. S…
About this article
All Sources -
Updated About encyclopedia.com content Print Topic
You Might Also Like