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Inbreeding is also used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
Inbreeding avoidance, or the inbreeding avoidance hypothesis, is a concept in evolutionary biology that refers to the prevention of the deleterious effects of ...
If inbreeding is due just to random mating in a finite population, due to purging the fitness mean fitness declines less than would be expected just from inbreeding and, after some initial decline, it can even rebound up to almost its value before inbreeding. Another consequence is the reduction of the so-called inbreeding load.
Inbreeding depression in Delphinium nelsonii. A. Overall fitness of progeny cohorts and the B. progeny lifespan were all lower when progeny were the result of crosses with pollen taken close to a receptor plant. [1] Inbreeding depression is the reduced biological fitness that has the potential to result from inbreeding (the breeding of related ...
The Huffington Post and YouGov asked 124 women why they choose to be childfree. Their motivations ranged from preferring their current lifestyles (64 percent) to prioritizing their careers (9 percent) — a.k.a. fairly universal things that have motivated men not to have children for centuries.
Population bottleneck followed by recovery or extinction. A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts; or human activities such as genocide, speciocide, widespread violence or intentional culling.
Keira Knightley’s number one reason for having no more kids isn’t the pain of childbirth or the endless nights of disrupted sleep. On Monday, Dec. 9. the actress, 39, gushed about her two ...
Wearing underwear when it's dirty is worse than you might think. Here's why.