Different versions of genes at each location can lead to higher or lower protein concentration in soybean.
The study illustrates the genetic foundation of evolution, including how genes can flow from one species to another, and how
different versions of a gene within a species can contribute to the formation of entirely new species, the researchers report in the journal Nature.
Infants in the study who had
different versions of the gene showed a more typical response to stress.
Different versions of genes can vary at single points in their sequence, and these variations are called SNPs.
To test their hunch, Duda and Palumbi tracked down
the different versions of a gene that encodes one type of neurotoxin.
Neves and Chess hypothesize that
a different version of the gene may affect humans similarly.
It is not that these are
different versions of genes; they are different genes.
They checked the offspring's DNA to see how the frequency of
different versions of their genes shifted compared with those frequencies in the parents.
The researchers mutated the DNA of the killer germ to make many
different versions of its genes.
It lists the various genes known to impact Aussie coat color,
the different versions of the genes, and which combinations result in which colors or patterns.
Not exact matches
The scientists also generated a panel
of (reconstructed) ancestral and existing TRIM5
genes (19 total), expressed them in cultured cell lines, and exposed the cells to 16
different retroviruses (lentiviruses and others) to see which TRIM5
versions conferred resistance to which viruses.
By splicing
genes for the original protein with ones that code for proteins containing
different instructions, the researchers created a modified
version of N - WASP.
However, when the sequence
of that genome emerged it appeared that the scientists were seeing double — the organism seemed to have two very
different versions of many
of its
genes.
To determine the rate at which DNA mutates, researchers compare
different versions of the same
gene from two to several dozen species.
In one experiment, Dangl's team found that Arabidopsis plants with mutant
versions of the PHR1
gene not only had impaired phosphate stress responses, but also developed
different communities
of microbes in and around their roots when grown in a local native North Carolina soil.
Wellcome Trust Sanger Institute scientists and their collaborators have developed a new analysis tool that was able to show, for the first time, which
genes were expressed by individual cells in
different genetic
versions of a benign blood cancer.
These variants are found in very
different places in the genome:
version H3.1 is found only in parts
of the genome where
genes are not being activated;
version H3.3 is present only in places where
genes are active.
Once a mutation is observed and a
gene is identified as being responsible, biologists will knock out that
gene and introduce
different versions of it to see what phenotypes they can induce.
BRAIN MAZE Even before symptoms show up, young people who have a
version of a
gene linked to Alzheimer's disease tap into
different areas
of the brain to navigate through a virtual reality maze.
UCLA scientists used DropSynth to make thousands
of bacterial
genes with
different versions of phosphopantetheine adenylyltransferase, or PPAT (pictured).
Because previous studies had suggested that
different alleles (
versions)
of the IL - 28B
gene affect immune responses, the researchers determined which alleles the transplant recipients carried.
If a mother has two
different versions, or alleles,
of a
gene, conventional genetic testing can't work out which allele she passed on to her child, because her blood contains both.
Different versions of the FRO2
gene («variants») fell into two groups, those that were associated with a short root and those that were associated with a long root.
In humans, Galatzer - Levy found that
different versions of the fkbp5
gene were able to predict specific differences in extinction learning related to PTSD symptoms such as reliving or re-experiencing the traumatic event; avoiding reminders
of the event; and, in particular, hyperarousal, or the inability to sleep or concentrate.
So far, scientists have found that
different populations
of living humans have inherited the Neandertal
version of genes that cause diabetes, lupus, and Crohn's disease; alter immune function; and affect the function
of the protein keratin in skin, nails, and hair.
Scientists have suspected that, like cells in the immune system, olfactory neurons diversify through recombination — that is, each cell randomly shuffles its DNA so it carries a slightly
different version of the same
gene.
The two groups, they found, had
different versions of a crucial
gene, one that coded for a protein involved in pigmentation.
In a paper that June, scientists demonstrated how it might be possible to efficiently edit
genes — that is, how to snip DNA at a particular spot and insert
different DNA, a sort
of biological
version of word processing's «find and replace.»
Having the right alleles (
different versions of a given
gene, as when the A1 allele
of the D2 dopamine receptor produces 30 percent fewer receptors than the more common A2 allele) available somewhere in the population can make one species do better than another when the climate perturbs things.