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The gene mutations that alter the base sequence of the whole genetic frame from the point of the mutation are called frame shift mutations. Here, the reading frame of the base sequence is shifted forward (due to insertion of one or more nucleotide base) or in the backward direction (due to deletion of one or more nucleotide base); options A and ...
Mutation in single nucleotide base of a DNA segment is called as a point mutation. It can introduce a premature stop codon, or a nonsense codon, by addition or deletion of the base, in the transcribed mRNA (nonsense mutation) or changes a codon specifying a different amino acid by substitution of one base (missense mutation).
Point mutation refers to the single nucleotide change in genes or single amino acid change in proteins. The common example is the sickle-cell anemia. This is a disorder caused due to a point mutation in the β - globin chain of hemoglobin. There is a point mutation which replaces A by U and results in glutamic acid replaced by valine.
Point mutation is a genetic mutation in which a s ingle nucleotide base is changed, inserted or deleted from a sequence of DNA or RNA. In sickle-cell anaemia single point mutation occurs. This point mutation occurs in the beta-haemoglobin gene.
A mutation is a type of mutation in which only one or few nucleotides are changed in a gene sequence. Sickle-cell anaemia is caused by a point mutation in the β-globin chain of haemoglobin. As a result, the hydrophilic amino acid, glutamic acid is replaced with the hydrophobic amino acid, valine at the sixth position.
Mutation in single nucleotide base of a DNA segment is called as the point mutation. Rearrangement of the chromosomal segment between two non-homologous chromosomes is called as translocation. Thalassemia is a group of blood disorders which are caused by mutations in the HbB and HbA genes present on chromosome 11 and chromosome 16 respectively.
A point mutation is a type of mutation that causes the replacement of a single base nucleotide of the genetic material, DNA, or RNA. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.
A point mutation is a type of mutation in DNA or RNA, the cell's genetic material, in which one single nucleotide base is added, deleted or changed. A point mutation is specifically when only one nucleotide base is changed in some way, although multiple point mutations can occur in one strand of DNA or RNA.
Mutation in single nucleotide base of a DNA segment is called as point mutation. Removal of one or more nucleotide bases to the DNA segment is known as deletion. Deletion of single nucleotide causes point mutation. Inversion is chromosomal mutation where a segment of a chromosome is reversed end to end.
Transition, in genetics and molecular biology, refers to a point mutation that changes a purine nucleotide to another purine (A ↔ G), or a pyrimidine nucleotide to another pyrimidine (C ↔ T). Sickle-cell disease is caused by a single point mutation (a missense mutation) in the beta-hemoglobin gene that converts a GAG codon into GUG, which ...