Genomic Conflict Flashcards
Selection can occur:
Between and within individuals and entities
An entity that benefits from adaptation:
Genes Cells Organisms Populations All interact with each other
When there is transmission bias…
Multiple level selection and conflict arises
When a trait is favoured at 1 level but selected against at another =
Conflict at multiple levels
Multicellular organisms=
Hierarchy of replicating units
Selection level is quicker in which entity?
Cells as they reproduce at a faster rate than the whole organism
Even distribution:
Both replicate at same rate and evenly distributed = no natural selection at lower level
Selection for A:
Ratio changes from generation to generation resulting in gene frequency change!
If a benefits cell more than A, genomic conflict!
Biased segregation favouring A:
Distributed unequally so transmission bias! Conflict arises as with selection for A
All individuals related to each other so no conflict
Asexual reproduction results in less genomic conflict
More prone to genomic conflict
Sex due to recombination of different lineages
Genes consistently overexpressed =
Segregation distorters
Segregation distorters AKA
Meiotic drive - meiosis isn’t equal!
Polyandry protects from driving elements in which species ?
Drosophila
