Mutations biology

A mutation is an unpredictable change in the genetic material of an organism. Gene mutation: change in the structure of a DNA molecule, producing a different allele of a gene. Chromosome mutation: changes in the structure or number of whole chromosomes in a cell. Sources/ mutagens : increase chances of a mutation occuring - random - environmental factors (ionising radiations alpha, beta, gamma; UV radiation; chemicals) Gene mutations Types: base substitution base addition base deletion…

Let’s Review Mutation

In this 2nd of 4 classes in the full year General Biology series, we'll go inside the workings of the building blocks of life- cells. We'll learn all about what they are and how they work, the role they play in genetics, and how genetics has shaped life through evolution.

What is DNA mutation? - In biology, a mutation is the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.

Somatic Mutation vs. Germline Mutation. Somatic Mutation occurs in somatic or body cells. Germline Mutation occurs in germ cells.

The key difference between gene mutation and chromosome mutation is that the gene mutation causes alteration of the nucleotide sequence of a gene while the

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. DNA and RNA are made up of many nucleotides.

Mutations usually involve a change in or disruption to a base sequence in the DNA. majority of mutations are harmful because they alter some

Cheat sheet-genetics