PROJECT IN BIOLOGY"
A mutation is a permanent change in the DNA sequence of a gene. Mutations in a gene's DNA sequence can alter the amino acid sequence of the protein encoded by the genes.How does this happen? Like words in a sentence, the DNA sequence of each gene determines the amino acid sequence for the protein it encodes. The DNA sequence is interpreted in groups of three nucleotide bases, called codons. Each codon specifies a single amino acid in a proteins.
Kind's of Syndrome
A mutation is a permanent change in the DNA sequence of no acid sequence of the protein encoded by the gene.
How does this hap
pen? Like words in a sentence, the DNA sequence eac
2.Klinefelter syndrome, 47, XXY, or XXY syndrome is a condition in which human males have an extra X chromosome. While females have an XX chromosomal makeup, and males an XY, affected individuals have at least two X chromosome and at least one Y chromosome Because of the extra chromosome, individuals with the condition are usually referred to as "XXY Males", or "47, XXY Males"Klinefelter's syndrome is the symptoms of the disease Seminiferous Tubule Dysgenesis As stated below this form of hypogonadism was first described by Klinefelter et al in 1942. The account given by Klinefelter came to be known as Klinefelter's syndrome as his name appeared first on the published paper, and Seminiferous Tubule Dysgenesis was no longer used.
Klinefelter's syndrome is the symptoms of the disease Seminiferous Tubule Dysgenesis As stated below this form o
f hypogonadism was first described by Klinefelter et al in 1942. The account given by Klinefelter came to be known as Klinefelter's syndrome as his name appeared first on the published paper, and Seminiferous Tubule Dysgenesis was no longer used.
Progeria (also known as "Hutchinson–Gilford Progeria Syndrome", "Hutchinson–Gilford syndrome", and "Progeria syndrome is an extremely rare genetic condition wherein symptoms resembling aspects of aging are manifested at an early age. The word progeria comes from the Greek words "pro" , meaning "before", and "géras" meaning "old age". The disorder has very low incidences and occurs in an estimated 1 per 8 million live births. Those born with progeria typically live to their mid teens and early twenties. It is a genetic condition that occurs as a new mutation (de novo), and is rarely inherited. Although the term progeria applies strictly speaking to all diseases characterized by premature aging symptoms, and is often used as such, it is often applied specifically in reference to Hutchinson-Gilford Progeria Syndrome (HGPS)
Down syndrome is a chromosomal condition characterized by the presence of an extra copy of genetic material on the 21st chromosome, either in whole (trisomy 21) or part (such as due to translocation). The effects and extent of the extra copy vary greatly among people, depending on genetic history, and pure chance. The incidence of Down syndrome is estimated at 1 per 733 births, although it is statistically more common with older parents due to increased mutagenic exposures upon some older parents' reproductive cells. Other factors may also play a role. Down syndrome occurs in all human populations, and analogous conditions have been found in other species such as chimpanzees and mice
Edwards syndrome (also known as Trisomy 18 (T18) or Trisomy E) is a genetic disorder caused by the presence of all or part of an extra 18th choromosome. It is named after John H.Edwards, who first described the syndrome in 1960. It is the second most common autosomal trisomy, after Down syndrome, that carries to term.
Edwards syndrome is caused by the presence of three – as opposed to two – copies of chromosome 18, in a fetus's or infant's cells. Edwards' syndrome occurs in around one in 6,000 live births and around 80 per cent of those affected are female. The majority of fetuses with the syndrome die before birth. The incidence increases as the mother's age increases. The syndrome has a very low rate of survival, resulting from heart abnormalities, kidney malformations, and other internal organ disorders.
Patau syndrome, also known as trisomy 13 and trisomy D, is a chromosomal abnormality, a syndrome in which a patient has an additional chromosome 13 due to a nondisjunction of chromosomes during meiosis. Some are caused by Robertsonian translocation. The extra chromosome 13 disrupts the normal course of development, causing heart and kidney defects, amongst other features characteristic of Patau syndrome. Like all nondisjunction conditions (such as Down syndrome and Edwards syndrome), the risk of this syndrome in the offspring increases with maternal age at pregnancy, with about 31 years being the average Patau syndrome affects somewhere between 1 in 10,000 and 1 in 21,700 live births
Progeria (also known as "Hutchinson–Gilford Progeria Syndrome", "Hutchinson–Gilford syndrome", and "Progeria syndrome is an extremely rare genetic condition wherein symptoms resembling aspects of aging are manifested at an early age. The word progeria comes from the Greek words "pro" , meaning "before", and "géras" meaning "old age". The disorder has very low incidences and occurs in an estimated 1 per 8 million live births. Those born with progeria typically live to their mid teens and early twenties. It is a genetic condition that occurs as a new mutation (de novo), and is rarely inherited. Although the term progeria applies strictly speaking to all diseases characterized by premature aging symptoms, and is often used as such, it is often applied specifically in reference to Hutchinson-Gilford Progeria Syndrome (HGPS)
Down syndrome is a chromosomal condition characterized by the presence of an extra copy of genetic material on the 21st chromosome, either in whole (trisomy 21) or part (such as due to translocation). The effects and extent of the extra copy vary greatly among people, depending on genetic history, and pure chance. The incidence of Down syndrome is estimated at 1 per 733 births, although it is statistically more common with older parents due to increased mutagenic exposures upon some older parents' reproductive cells. Other factors may also play a role. Down syndrome occurs in all human populations, and analogous conditions have been found in other species such as chimpanzees and mice
Edwards syndrome (also known as Trisomy 18 (T18) or Trisomy E) is a genetic disorder caused by the presence of all or part of an extra 18th choromosome. It is named after John H.Edwards, who first described the syndrome in 1960. It is the second most common autosomal trisomy, after Down syndrome, that carries to term.
Edwards syndrome is caused by the presence of three – as opposed to two – copies of chromosome 18, in a fetus's or infant's cells. Edwards' syndrome occurs in around one in 6,000 live births and around 80 per cent of those affected are female. The majority of fetuses with the syndrome die before birth. The incidence increases as the mother's age increases. The syndrome has a very low rate of survival, resulting from heart abnormalities, kidney malformations, and other internal organ disorders.
Patau syndrome, also known as trisomy 13 and trisomy D, is a chromosomal abnormality, a syndrome in which a patient has an additional chromosome 13 due to a nondisjunction of chromosomes during meiosis. Some are caused by Robertsonian translocation. The extra chromosome 13 disrupts the normal course of development, causing heart and kidney defects, amongst other features characteristic of Patau syndrome. Like all nondisjunction conditions (such as Down syndrome and Edwards syndrome), the risk of this syndrome in the offspring increases with maternal age at pregnancy, with about 31 years being the average Patau syndrome affects somewhere between 1 in 10,000 and 1 in 21,700 live births
Walang komento:
Mag-post ng isang Komento