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Gene mutations
Gene mutations describe a change in the DNA sequence that makes up a gene. There are many kinds of gene mutations which have been characterized by scientists. The main categories of mutations are germline mutations, which occur in the gametes (haploid male or female reproductive cells), and somatic mutations, occur in all other cell types. Chromosomal alterations are mutations that change the structure of chromosomes in a variety of ways such as deletion, duplication, insertion, translocation, or inversion of a section of the chromosome. Point mutations include a single nucleotide change within the DNA and these mutations can be classified as silent (the mutation codes for the same amino acid so the change has no effect), missense (the mutation codes for an alternative amino acid), and nonsense (the mutation codes for a premature stop codon). Frameshift mutations occur when the addition or deletion of nucleotide(s) alter the reading frame of the sequence altering all subsequent amino acid coding.
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For decades, the study of genetic disease was focused on genes that code for protein. But scientists have now identified ...Written By: Carmen LeitchMAY 28, 2024Genetics & Genomics
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OCT 28, 2024
Genetics & Genomics
Oropouche virus (OROV) is transmitted by infected midges and some types of mosquitoes
Written By:
Carmen Leitch
OCT 22, 2024
Genetics & Genomics
Schizophrenia is thought to affect 1 percent of the global population, and treatment options are limited because of a po
...
Written By:
Carmen Leitch
OCT 14, 2024
Clinical & Molecular DX
This work is based on PET scan and genetic data that was collected from over 3,000 people.
Written By:
Carmen Leitch
OCT 10, 2024
Genetics & Genomics
There are some disorders that have specific causes, such as genetic mutations, but correcting those errors can be incred
...
Written By:
Carmen Leitch
OCT 01, 2024
Cell & Molecular Biology
The world's population is aging, and dementia and Alzheimer's are becoming more common. Alzheimer's also tends to impact
...
Written By:
Carmen Leitch
SEP 30, 2024
Genetics & Genomics
Hormones can have a significant impact on the body; many of them are produced and released from the pituitary gland. In
...
Written By:
Carmen Leitch
SEP 27, 2024
Clinical & Molecular DX
Scientists have identified several new genetic mutations linked to a rare neurodegenerative disease called CSF1R-related
...
Written By:
Carmen Leitch
SEP 23, 2024
Cell & Molecular Biology
There are different theories of aging, and scientists have found various ways to measure biological age. Mutations that
...
Written By:
Carmen Leitch
SEP 22, 2024
Genetics & Genomics
Scientists have used whole genome sequencing data from Norwegian infants to identify a genetic variant that almost total
...
Written By:
Carmen Leitch
SEP 04, 2024
Genetics & Genomics
DNA has to be interpreted by cells. But that interpretation can change, depending on different factors...
Written By:
Carmen Leitch
AUG 27, 2024
Microbiology
Since the start of the COVID-19 pandemic, the virus that causes the illness - SARS-CoV-2 - has had a practically infinit
...
Written By:
Carmen Leitch
AUG 04, 2024
Cell & Molecular Biology
Two new studies have outlined major new findings in Parkinson's disease genetics. One has identified a gene that could r
...
Written By:
Carmen Leitch
JUL 26, 2024
Clinical & Molecular DX
Many rare diseases can be traced back to an error in a gene. Genetic mutations may not be inherited, and can arise out o
...
Written By:
Carmen Leitch
JUL 18, 2024
Cannabis Sciences
Cannabidiol (CBD) may protect against skin damage caused by the sun's ultraviolet-A (UVA) radiation.
Written By:
Annie Lennon
JUL 15, 2024
Neuroscience
Researchers have identified a mutation of the ARPP21 gene as a potential causative factor for ALS.
Written By:
Annie Lennon
JUN 25, 2024
Genetics & Genomics
Small changes in genes can make us unique, but they can also have biological effects. Scientists have identified a rare
...
Written By:
Carmen Leitch
JUN 19, 2024
Genetics & Genomics
Lung cancer is a leading cause of cancer-related deaths. There are two primary types of lung cancer: non-small cell lung
...
Written By:
Carmen Leitch
JUN 06, 2024
Clinical & Molecular DX
When the TREX1 gene is functioning normally, it produces a protein that helps maintain DNA in cells throughout the body.
...
Written By:
Carmen Leitch
JUN 03, 2024
Genetics & Genomics
For decades, the study of genetic disease was focused on genes that code for protein. But scientists have now identified
...
Written By:
Carmen Leitch
MAY 28, 2024
Genetics & Genomics
While some genes have been linked to specific disorders, it may not always be clear how changes in those genes can lead
...
Written By:
Carmen Leitch
MAY 13, 2024
Genetics & Genomics
During the development of a human embryo, a structure called the neural tube grows and will eventually give rise to the
...
Written By:
Carmen Leitch
MAY 10, 2024
Cell & Molecular Biology
Scientists have created a new technique that can assess how mutations in the genome influence the packaging of DNA in ce
...
Written By:
Carmen Leitch
APR 26, 2024
Genetics & Genomics
Mutations in a gene called SCN2A are known to cause seizures in infants, and have been associated with autism spectrum d
...
Written By:
Carmen Leitch
APR 09, 2024
Genetics & Genomics
During the 2009 H1N1 influenza pandemic, there was a marked increase in neurological complications such as febrile seizu
...
Written By:
Carmen Leitch