There' s no longer any doubt—the wolves found in Norway and Sweden today are actually Finnish, according to extensive studies done on their genetic makeup. Humans wiped out Norway's original wolf population in the wild ...
Plants & Animals
Dec 1, 2021
1
40154
New research suggests that Charles Darwin's family was a living human example of a theory that he developed about plants: that inbreeding could negatively affect the health and number of resulting offspring.
Other
May 3, 2010
1
2
The impact of hatcheries on salmon is so profound that in just one generation traits are selected that allow fish to survive and prosper in the hatchery environment, at the cost of their ability to thrive and reproduce in ...
Evolution
Dec 19, 2011
100
0
Every tree species has its story. Unraveling all 73,000 of them is a significant undertaking for science, in no small part because a considerable proportion of tree biodiversity is tropical, rare, remote and subject to the ...
Plants & Animals
Nov 15, 2023
2
145
(PhysOrg.com) -- We are all aware that the giant panda is an endangered species. Dutch researchers at the University of Twente’s Faculty of Geo-Information Science and Earth Observation (ITC, The Netherlands) have suggested ...
Plants & Animals
Jan 22, 2010
0
0
China's giant panda could be extinct in just two to three generations as rapid economic development is infringing on its way of life, state media said on Monday, citing an expert at conservation group WWF.
Plants & Animals
Aug 17, 2009
6
0
Weakened by inbreeding and disease, bumble bees have died off at an astonishing rate over the past 20 years, with some US populations diving more than 90 percent, according to a new study.
Plants & Animals
Jan 3, 2011
16
0
Here's the good news: you are a male and you are allowed to have sex, at most, twice in your life. If that's the good news -- you may well ask -- what's the bad news? It's this: if you copulate for longer than 10 seconds, ...
Plants & Animals
Apr 20, 2010
1
0
(Phys.org) —As is the case in all areas of science, our understanding of evolutionary biology is… well, evolving. Two such areas are macroevolution (any evolutionary change at or above the level of species – that is, ...
Performing experiments in a river in Trinidad, a team of evolutionary biologists has found that male guppies continue to reproduce for at least ten months after they die, living on as stored sperm in females, who have much ...
Plants & Animals
Jun 12, 2013
0
0
Inbreeding is breeding between close relatives, whether plant or animal. If practiced repeatedly, it can lead to exposure of recessive, deleterious traits. This generally leads to a decreased fitness of a population, which is called inbreeding depression. Deleterious alleles causing inbreeding depression can subsequently be removed through culling. This is known as genetic purging.
Livestock breeders often practice inbreeding to "fix" desirable characteristics within a population. However, they must then cull unfit offspring, especially when trying to establish the new and desirable trait in their stock.
In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the heterosis effect. Inbreeding in plants also occurs naturally in the form of self-pollination.
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