Its sperm and egg cells will thus bear two
copies of the new gene, which radically increases the odds that its offspring will inherit it.
Not exact matches
Lacking money to outfit the
new lab, Wang and Xin bought used equipment: a single channel DNA sequencer (bought and barely touched by a Harvard Medical School researcher); second - hand centrifuges and pipettes; a reconditioned CytoScan HD system that detects variations in the number
of copies of a
gene.
These highly repeated bits
of DNA are capable
of expressing and inserting
new copies of themselves back into the genome — hence the sobriquet «jumping
genes.»
In this cycle,
new gene copies often arise by
gene duplication, with the
copies persisting or adapting into
new roles within the genome for varying lengths
of time, or dying off and being lost randomly.
«Analyzing
copies of genes offers
new treatment possibilities for ovarian cancer.»
In a
new study published in The Quarterly Review
of Biology, Dr. Karen Hardy and her team bring together archaeological, anthropological, genetic, physiological and anatomical data to argue that carbohydrate consumption, particularly in the form
of starch, was critical for the accelerated expansion
of the human brain over the last million years, and coevolved both with
copy number variation
of the salivary amylase
genes and controlled fire use for cooking.
A team
of 18 University
of California San Diego School
of Medicine and Moores Cancer Center researchers has developed a
new tool to analyze an often overlooked aspect
of cancer genetics — an alteration that results in the loss or gain in a
copy of a
gene.
The
new method has been tested in greenhouse trials to show that the more
copies of the
gene, the greater the resistance to soybean cyst nematode.
Although the researchers suspected that having more
copies of the
gene sequence might confer a greater degree
of resistance, they had no way
of testing their suspicions before the
new assay was developed.
The number
of copies of the resistance
gene varies among cultivars; a
new method, developed by University
of Illinois researchers, is able to efficiently quantify this variation for the first time.
New genome - sequencing research suggests white European people with two
copies of variant forms
of MC1R, a
gene linked to pale skin and red hair, have faces that appear up to two years older than those who are the same age but don't have both
copies.
A strong, male - biased mutation spectrum was also measured, wherein three - quarters
of mutations occurred in sperm thorough spermatogenesis, as well as
new structural alterations, such as changes in
gene conversion and
copy number.
By studying rare «
copy number variations,» which are individual errant insertions or deletions
of DNA segments (each
of which occur in less than one percent
of the population), researchers discovered a
new cluster
of genes that are affected in some autistic individuals as well as a number
of mutations that were present in autistic children but not their parents.
In the
new study involving mice, published in the journal Molecular Neurodegeneration, the injection
of zinc finger repressed the mutant
copies of the
gene for at least six months.
The
new study suggests that even rare mutations that disable both
copies of a
gene, which scientists thought would be associated with diseases, aren't necessarily a problem.
They can do this in various ways, but the
new pictures are about one way in particular: events occurring after the attachment
of the machinery to an RNA message (mRNA)
copied from a
gene.
For the
new mouse model, the researchers exposed adolescent mice with at least one
copy of a variant
of the BDNF
gene, which has been associated with anorexia and anxiety in mice and humans, to social stress and caloric restriction.
In another paper in the same issue, a team led by molecular biologist Ronald Plasterk, now at the Hubrecht Laboratory in Utrecht, the Netherlands, reports an intriguing twist: The same
genes appear to be responsible for both RNAi and another
gene - silencing mechanism known as cosuppression, in which adding extra
copies of a
gene cause both the
new and the existing
copies of that
gene to be shut down.
In the
new study, Deisseroth's team used mice that lack both
copies of CNTNAP2, a
gene linked to autism.
Breast cancer patients with a mutation in both
copies of the NQO1
gene have a 20 % lower survival rate 5 years after treatment than do patients without the mutation, according to a
new study
of more than 2000 Finnish women.
To stop hepatitis C, any effective drug also had to incorporate itself into the virus's genetic code, where it would need to halt the virus's ability to make
new copies of its
genes and thus to make
new virus.
Mice carrying a mutated
copy of the
gene have 10-fold fewer neurons and other brain abnormalities, a
new study suggests.
While the cell is in the process
of copying its genetic material, the
new DNA would then replace a nearly identical existing
gene segment in the cell, changing it slightly.
As reported in the
new study, the researchers were able to postpone the onset
of hearing loss and associated hair cell degeneration by about a month, providing enough time to inject normal
copies of the Clarin - 1
gene into the ear before the onset
of hearing loss to see if the treatment was effective.
It can help organisms take advantage
of new opportunities: With extra
copies around, some
genes keep doing their old job while others are repurposed for some brave
new world.
Both
of the
new studies found that
copy number events involving either duplication or deletion
of the 25 to 30 chromosome - 16
genes — several
of which are known to play a role in the developing brain — appear to cause autism.
About the same time, scientists at Cold Spring Harbor Laboratory in Long Island, N.Y., focusing on families with one autistic child, reported that an estimated 10 to 30 percent
of all reported cases
of autism may be caused by
new (or spontaneous) mutations in the number
of copies of genes in children (that were not found in either parent).
Simply replicating a piece
of a particular
gene — from one
copy in mice to more than 200 in humans — may have prompted some
of the changes in the brain that define us as human, according to a
new study.
While we had previously found an effective treatment for those with the «celtic
gene» this
new combination treatment has the potential to help roughly half
of those with cystic fibrosis, those who have two
copies the F508DEL mutation.
According to Dr. Wong, «This combined strategy provides us with a
new tool for reliable molecular analysis
of any
genes containing multiple
copies of highly homologous sequences and should improve the positive finding rate for patients with Lynch syndrome if the PMS2
gene is suspected to be defective.
Since DNA moves between individuals, a
new generation will not be stuck with just a
copy of its parental
genes.
By inserting the
gene for a
new trait alongside
genes for a DNA - cutting enzyme and an RNA guide, scientists can prompt a cell to slice out
copies of the original, wild - type
gene from its chromosomes and use the inserted
gene as a template for repair.
«The
copied genes show us which bacteria species are in the sample and tell us
new information about the diversity
of arsenate - reducing microorganisms.»
In a previous study, Shaw, an associate professor in Salk's Molecular and Cell Biology Laboratory and researcher in the Institute's
new Helmsley Center for Genomic Medicine, demonstrated that cells lacking a normal
copy of the LKB1
gene fail to activate AMPK in response to low energy levels.
«We found a
new gene, a perfect
copy of another
gene,» said Parker.
Using DECoN (which stands for Detection
of Exon
Copy Number variants), the researchers took advantage
of the high density
of sequencing data available in
new gene panels to accurately detect deletions or duplications
of exons.
In the
new study, a team led by Harvard University's George Church — one
of the pioneers
of the CRISPR technique — used
gene editing to remove all the
copies of porcine endogenous retroviruses (or PERVs) from their pig cells» DNA.
When a
new copy of their DNA gets inserted into our genome, it can disrupt an essential
gene.
And when the microbe divided in two, it made
new copies of the frog
genes along with its own.
Developing novel tools to quantify
gene expression in single cells As it has become increasingly apparent that
gene expression in individual cells deviates significantly from the average behavior
of cell populations,
new methods that provide accurate integer counts
of mRNA
copy numbers in individual cells are needed.
For 1,317 distinct
genes, both
copies were found to have deleterious mutations in at least one individual, resulting in «human knockouts» for a remarkable number
of new genes for whom human knockouts have never been reported.
By characterizing the role
of gene mutations and
copy number variations in a number
of complement associated disorders, including kidney diseases, such as HUS (Hemolytic Uremic Syndrome), DDD (Dense Deposit Disease) or AMD (Age Related Macular Degeneration) the group has identified
new disease subtypes
of this severe kidney diseases.
Team finds that some cells activate only one
of their two
gene copies during development, altering protein yields and raising
new questions...