chromosomal mutation . nieve

01. Genetic Mutations. Definition of Mutations, What causes Mutations?, Different Types of Mutations..

What is Mutation?. mutation , an alteration in the genetic material (the genome ) of a cell of a living organism or of a virus that is more or less permanent and that can be transmitted to the cell’s or the virus’s descendants..

What causes Mutation?. Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations..

CLASS OF GENETIC MUTATION. Point Mutation Chromosomal Mutation.

TYPES OF POINT MUTATION. 01. Substitution. 02. Insertion.

A mutation involving a long segment of dna . These mutations can involve deletions, insertions, or inversions of sections of dna . In some cases, deleted sections may attach to other chromosomes , disrupting both the chromosomes that loses the dna and the one that gains it. Also referred to as a chromosomal rearrangement..

TYPES OF CHROMOSOMAL MUTATION. 01. Inversion. 02.