What are they?
A genetic disorder is a disease caused by a change, or mutation, in an individual’s DNA sequence (an illness caused by changes in a person’s DNA).
Genetic errors during mitosis
Errors in the copying of DNA during mitosis can lead to changes in the DNA sequence. If a change happens during mitosis, only the cells derived (descendents) from that cell will have the alteration.
Errors during meiosis
Errors that may occur during meiosis include the incorrect copying of the DNA sequence when the DNA is replicated before division, errors during recombination or errors when the chromosomes segregate to the daughter cells.
Errors during DNA replication
Copying errors may lead to alterations within the sequence of a gene.
Alterations which disrupt gene function and lead to disease are known as mutations.
Alterations which disrupt gene function and lead to disease are known as mutations.
MENTAL ILLNESSES
Mental illness refers to a wide range of mental health conditions; disorders that affect your mood, thinking and behavior.
The causes of mental disorders are often unclear.
Mental disorders are usually defined by a combination of how a person feels, acts, thinks or perceives. This may be associated with particular regions or functions of the brain, often in a social context. A mental disorder is one aspect of mental health.
The scientific study of mental disorders is called psychopathology.
Genetic five major psychiatric disorders: autism, ADHD, bipolar disorder, major depressive disorder, and schizophrenia.
The most important ones are autism and schizophrenia:
The causes of mental disorders are often unclear.
Mental disorders are usually defined by a combination of how a person feels, acts, thinks or perceives. This may be associated with particular regions or functions of the brain, often in a social context. A mental disorder is one aspect of mental health.
The scientific study of mental disorders is called psychopathology.
Genetic five major psychiatric disorders: autism, ADHD, bipolar disorder, major depressive disorder, and schizophrenia.
The most important ones are autism and schizophrenia:
- AUTISM: Autism is a neurodevelopmental disorder characterized by impaired social interaction, verbal and non-verbal communication, and restricted and repetitive behavior. Genetic factors may be the most significant cause for autism spectrum disorders. Several lines of evidence point to synaptic dysfunction as a cause of autism (In the nervous system, a synapse is a structure that permits a neuron or nerve cell, to pass an electrical or chemical signal to another neuron).
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MUTATION ILLNESSES
They are illnesses caused by changes in number of chromosomes.
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