yes, down syndrome is caused by non disjunction, an error in the process of cell division
A frame shift mutation can cause cancer or it can be beneficial or have no effect at all. The shift affects a series of codes that make proteins. Sometimes the "new" codes work OK and may not work at all and be a dead end. If a person plays cords on a piano but moves the hands a little up or down, the sound may be awful or beautiful.
The phrase is spelled Down Syndrome. Down Syndrome is a disorder caused by a mutation of the chromosomes.
Four types of chromosomal mutations are Down syndrome (which is a mutation in which there are three copies of chromosome 21), Kinefelter Syndrome (which is a mutation in which a male has an extra X-chromosome), Turner Syndrome (which is a mutation in which a female is missing an X-chromosome), and Patau Syndrome (which is a mutation in which there are three copies of chromosome 13).
Chromosomal mutation can have lasting impacts on the person who this happens to. A version of a chromosomal mutation is the mutation that leads to Down's Syndrome.
Four types of chromosomal mutations are Down syndrome (which is a mutation in which there are three copies of chromosome 21), Kinefelter Syndrome (which is a mutation in which a male has an extra X-chromosome), Turner Syndrome (which is a mutation in which a female is missing an X-chromosome), and Patau Syndrome (which is a mutation in which there are three copies of chromosome 13).
Down's Syndrome is caused mainly by a mutation in the gene. It is a genetic disorder, which means it was passed on from parents to offspring.
A very small number.
A negative mutation is one which is harmful to the organism. The result of a negative mutation is a non-sense protein. Examples of negative mutations include:a frame shift mutation - codons are read wrongan insertion mutation - insertion of a sequence of extra nucleotidesa deletion mutation - deletion of a chain of nucleotidesa non-sense mutation - results in the creation of a non-sense proteina transition mutation - exchange of purines to pyrimidines thus changing the nucleotide sequence and resulting in a mutation.
Down's Syndrome Kleinfelter's Syndrome
Down syndrome is caused by an additional chromosome while PKU is due to a mutation or defect in a gene.
No. Down is caused by an extra chromosome while Marfan is due to a mutation in one or more genes.
Down Syndrome is a the addition of an extra chromosome and not really related to evolution. It is more of a genetic mutation that causes this event to occur.