What is Intragenomic recombination?
Intragenomic conflict refers to the evolutionary phenomenon where genes have phenotypic effects that promote their own transmission in detriment of the transmission of other genes that reside in the same genome.
What is the effect of Intragenomic conflict on selection?
Thus, the combination of intragenomic conflict and pleiotropic effects of imprinted genes create a situation where natural selection will often produce a phenotype that is more extreme than what is favored by either of the conflicting loci.
Is conflict built into our DNA?
According to this paradigm, genetic conflict can arise among components of the genome that have different transmission patterns (e.g., transposons, nuclear genes, cytoplasmic genes), and therefore conflicting genetic interests.
What is Intergenomic?
Intergenomic conflict is a selective agent that can drive. antagonistic coevolution between loci within the genome. of a single species. We will refer to this process as in- terlocus contest evolution (ICE).
Why does Intragenomic conflict occur?
In particular, intragenomic conflict arises when the inclusive-fitness consequences of a particular phenotypic change are positive for one gene (∆ Ha > 0) and negative for another gene (∆ Hb < 0), such that they are favoured to pull the phenotype in different directions.
What does genetic recombination mean in biology?
Recombination is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles. Crossovers result in recombination and the exchange of genetic material between the maternal and paternal chromosomes. As a result, offspring can have different combinations of genes than their parents.
Are transposons selfish DNA?
Transposable elements are often termed selfish DNA because they are parasitic DNA sequences that inhabit a host genome. Over time, many copies of selfish DNA are inactivated by mutations and deletions, leaving DNA remnants called junk DNA.
What is an example of a selfish gene?
Examples include cytoplasmic male sterility (see Selfish mitochondria). While mitochondrial and chloroplast genes are generally maternally inherited, B chromosomes can be preferentially transmitted through both males and females.