Mutation
Every time cells divide to make new cells, the DNA also gets replicated. Cells have sophisticated mechanisms to check and fix errors that may arise during DNA replication.
Sometimes, small mistakes may go unchecked, causing a permanent change in the DNA sequence, this is called a mutation.
It can happen naturally during cell division or be caused by harmful environmental factors called mutagens. Examples include UV radiation, certain chemicals like asbestos, and certain types of viruses.
Interestingly, most mutations are neutral—they don’t cause any noticeable changes and are simply passed on as cells divide.
Some of these mutations can be harmful. For example, tobacco smoke and excessive exposure to asbestos are linked to cancer.
Mutations are grouped into two main types: Gene mutations and Chromosomal mutations.
Gene mutations involve small changes in DNA, like swapping one DNA letter. Such mutations are called point mutations.
Chromosomal mutations affect larger sections of chromosomes, like deleting an entire segment or swapping segments between two chromosomes.
Mutation
A mutation is a change in an organism's DNA sequence. Mutations can occur naturally or be triggered by environmental factors such as radiation…
Every time cells divide to make new cells, the DNA also gets replicated. Cells have sophisticated mechanisms to check and fix errors that may arise during DNA replication.
Sometimes, small mistakes may go unchecked, causing a permanent change in the DNA sequence, this is called a mutation.
It can happen naturally during cell division or be caused by harmful environmental factors called mutagens. Examples include UV radiation, certain chemicals like asbestos, and certain types of viruses.
Interestingly, most mutations are neutral—they don’t cause any noticeable changes and are simply passed on as cells divide.
Some of these mutations can be harmful. For example, tobacco smoke and excessive exposure to asbestos are linked to cancer.
Mutations are grouped into two main types: Gene mutations and Chromosomal mutations.
Gene mutations involve small changes in DNA, like swapping one DNA letter. Such mutations are called point mutations.
Chromosomal mutations affect larger sections of chromosomes, like deleting an entire segment or swapping segments between two chromosomes.
Every time cells divide to make new cells, the DNA also gets replicated. Cells have sophisticated mechanisms to check and fix errors that may arise during DNA replication.
Sometimes, small mistakes may go unchecked, causing a permanent change in the DNA sequence, this is called a mutation.
It can happen naturally during cell division or be caused by harmful environmental factors called mutagens. Examples include UV radiation, certain chemicals like asbestos, and certain types of viruses.
Interestingly, most mutations are neutral—they don’t cause any noticeable changes and are simply passed on as cells divide.
Some of these mutations can be harmful. For example, tobacco smoke and excessive exposure to asbestos are linked to cancer.
Mutations are grouped into two main types: Gene mutations and Chromosomal mutations.
Gene mutations involve small changes in DNA, like swapping one DNA letter. Such mutations are called point mutations.
Chromosomal mutations affect larger sections of chromosomes, like deleting an entire segment or swapping segments between two chromosomes.
View the full transcript and gain access to JoVE Core videos
From Chapter undefined:
Now Playing
Mutation
Related Videos
68 Views
DNA
Related Videos
71 Views
Human Genome
Related Videos
71 Views