Deletion (Chromosome Mutation) — Definition & Examples
Read this topicExplanations 3
- (Video) Chromosomal Mutations by Kevin Glass A deletion is when a segment of a chromosome is deleted and lost forever. This is a really bad mutation because genetic material is …
By Aaron Lauer, Alex Federspiel, Deena Hauze, Gabi Slizewska, Mario Janakis, Caroline K
- (Video) Mutations: The Potential Power of a Small Change by Amoeba Sisters Deletion mutations occur when a piece of a chromosome separates and never reattaches. This mutation ca…
By Samantha Broders, Alex Federspiel, Deena Hauze, Gabi Slizewska, Mario Janakis
- Deletion Chromosome mutations change the number or structure of the chromosomes. These mutations can even change the location and number of certain genes on a chromosome. Mutati…
By Deena Hauze, Alex Federspiel, Gabi Slizewska, Mario Janakis, Caroline K
Problems 20
- What happens in a deletion mutation?
- What sort of chromosome mutation has occurred here?
- Nondisjunction is an error during meiosis which can result in a cell which is missing a chromosome. What type of chromosomal mutation can also result in a missing copy of a chro…
- Monosomy is a condition in which a person is missing a copy of a chromosome. Which chromosomal mutation can cause this?
- Cri du chat is a rare genetic disorder resulting from a missing arm on chromosome 5. What type of mutation is this?
- Look at the karyotype above. Which chromosome has a deletion mutation?
- Look at the karyotype above. What kind of mutation is shown at chromosome 4?
- You are studying someone's genotype and discover that several genes are missing. What kind of mutation could have caused this?
- Several genes are removed from a chromosome, making it much smaller. What kind of mutation is this?
- Scientists are looking for a new treatment for Wolf–Hirschhorn syndrome. When examining the karyotype of someone with this disorder they notice that part of the short arm of chr…
- If the original sequence of genes on one chromosome is 1, 2, 3, 4, 5, 6, then which of the following shows a deletion mutation?
- Aneuploidy is the presence of an abnormal number of chromosomes within a cell. What kind of mutation(s) can cause this condition? Select any that apply.
- Due to a deletion mutation, a person is missing one copy of chromosome 3. What is this condition called?
- You are studying the genome of someone with 1 X chromosome, 1 Y chromosome, and 43 somatic chromosomes. What is this condition called?
- Turner's syndrome is an example of monosomy. What mutation causes it?
- Why might the deletion of a gene on one chromosome cause a disease if a person still has a working copy of the gene on their homologous chromosome?
- What kind of mutation occurs when a piece of a chromosome detaches itself during meiosis and never reattaches to the rest of the chromosome?
- During meiosis, crossing over took place between two chromosomes. One chromosome donated some of its genes to the other but didn't receive any in return. What kind of mutation w…
- Which of the following mutations can make a chromosome appear shorter that it should normally be? Select any that apply.
- During meiosis homologous chromosomes line up and exchange genes. In the diagram above, homolog 1 has a mutation which causes a loop to form in homolog 2 when they pair up. What…