What does 7-repeat allele mean?
The dopamine receptor D4 gene (DRD4) 7-repeat allele has been found to interact with environmental factors such as parenting in children and peer attitudes in adults to influence aspects of behavior such as risk taking.
What is DRD4 7R gene?
The gene is a variant of DRD4, a receptor which controls our dopamine levels. This is a brain chemical which helps to control the reward and pleasure centres in our brains. When we experience something that we enjoy, dopamine is released, helping our brain to associate that thing with pleasure.
What is DRD4?
DRD4 influences the postsynaptic action of dopamine and is implicated in many neurological processes, exhibits polymorphism and is one of the most studied genes in connection with psychiatric disorders.
What traits is the DRD4 7R gene associated with?
The DRD4 gene is known to regulate traits such as motivation and thrill seeking, and is also associated with attention deficit hyperactivity disorder (ADHD) and addictive and risky behavior.
What is the best definition of allele?
An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or color blindness. Alleles are also called alleleomorphs. Your blood type is determined by the alleles you inherited from your parents.
What is DRD4 gene?
As a gene responsible for the regulation of the dopaminergic system and in turn reward processing (Wise, 2002), the DRD4 gene may contribute to the behaviors connected with dopamine levels, e.g., risk-taking. The role of dopamine in reward processing and risk taking has been investigated in animal studies.
What is the cheating gene?
Scientists have a hunch that the desire to cheat could be linked back to something called the dopamine receptor DRD4 polymorphism — aka the “thrill-seeking” gene that’s also been called out as the gene responsible for alcoholism and gambling addiction.
What is an allele Class 12?
An allele is an alternative form of a gene. It is located at a specific position on a specific chromosome. These can be passed on from parents to offspring through sexual reproduction.
What are alleles in biology class 12?
Alleles are a pair of genes that occupy a specific location on a particular chromosome and control the same trait. Alleles may appear in pairs or in multiple forms of alleles, which affect a specific trait of the offspring. Locus is the location where a gene is found on a chromosome.