gene duplication

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gene duplication

[′jēn düp·lə′kā·shən]
(genetics)
The reduction in fitness of a diploid population due to new mutant genes and those already in the gene pool.
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References in periodicals archive ?
Often, the expression of both copies of a duplicate gene is likely to have changed relative to the predicted ancestral state [36].
Rapid subfunctionalization accompanied by prolonged and substantial neofunctionalization in duplicate gene evolution.
Unlike people with schizophrenia or autism, people with ADHD are no more likely than average to have missing or duplicate gene copies overall, the researchers report in the Aug.
Washington, Feb 17 (ANI): In a new research, scientists have found that butterflies that have a duplicate gene allowing them to see ultraviolet colors also have UV-yellow pigment on their wings, which enables them to identify their own species.
The level of variation between duplicate genes is low, and every gene copy contains several insertions and deletions (Kawashima et al., 2013).
The study also found a variation between dogs in the number of duplicate genes involved in the production of amylase, a pancreatic enzyme required for the first step of starch digestion.
The different fates of duplicated genes in different species can be explained by the birth-death evolution model in which new genes are created by gene duplication and some of these duplicate genes stay in the genome over time, whereas others are inactivated or deleted from the genome [43].
Instead of trying to duplicate genes, though, he'll be duplicating the epigenetics of famous people.
So Dennis and her colleagues examined the duplicate genes in more than 150 people and found that the younger version of the gene has become fixed in the human population, meaning that absolutely everyone has it.
Well, I've read quite a bit of scientific blurb on this topic, and just about all of it has emphasised that there is no certainty that cloning, although it can duplicate genes, can duplicate appearance, size, character or athletic ability.
And why does the human genome, our complete genetic constitution, contain many duplicate genes? Researchers are using a small fish, the zebrafish, to help discover how specific genes control development and how that development is altered by mutations in the genes.