Duplication (Chromosome Mutation) — Definition & Examples
Read this topicExplanations 3
- Chromosome Duplications Duplication is when a segment of a chromosome is copied and placed into another chromosome. Duplication happens during meiosis when two misaligned homolo…
By Aaron Lauer, Alex Federspiel, Deena Hauze, Gabi Slizewska, Mario Janakis, Caroline K
- What Is Duplication? Duplication is a type of chromosomal mutation that occurs when a section of a chromosome is repeated. This causes the two homologous chromosomes to have dif…
By Samantha Broders, Alex Federspiel, Deena Hauze, Gabi Slizewska, Mario Janakis
- (Video) Mutations by Amoeba Sisters This video by the Amoeba Sisters describes four types of chromosome mutations. Summary Chromosomes are made up of DNA and proteins. Humans ha…
By Deena Hauze, Alex Federspiel, Gabi Slizewska, Mario Janakis
Problems 20
- What kind of chromosome mutation is happening on this chromosome?
- Crossing over usually happens between what two genetic structures?
- Looking at the diagram above, which of the following shows a duplication event?
- What type of mutation can result in an extra copy of a gene?
- Down Syndrome is caused by three copies of chromosome 21. Which type of chromosome mutation is this an example of?
- Polyploidy is the condition of having an extra copy of a chromosome. Which chromosomal mutation can result in this?
- Klinefelter syndrome is a genetic disorder in which a male has 2 or more X chromosomes. What kind of mutation results in this disorder?
- Look at the karyotype above. Which chromosome shows a duplication?
- Look at the karyotype above. what type of mutation is shown in chromosome 16?
- You are studying someone's DNA and discover that there are extra copies of several genes. What kind of mutation caused this?
- After DNA replication, the cell contains 3 copies of chromosome 4. What kind of mutation occurred?
- A DNA sequence contains genes W, X, Y, and Z. After DNA replication, the sequence contains genes W, X, Y, Y, Y, and Z. What kind of mutation is this?
- If the original sequence of genes on one chromosome is 1, 2, 3, 4, 5, 6, then which of the following shows a duplication 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.
- You are studying the genome of someone with 2 X chromosomes and 45 somatic chromosomes. What kind of mutation does this person have?
- Due to a duplication mutation, a person has an extra copy of chromosome 9. What is this condition called?
- How is a non-reciprocal translocation different from a duplication?
- Why might the duplication of a gene cause disease?
- Farmers use selective breeding to promote the mating of plants that have desired characteristics. Often, they prefer polyploid plants which tend to be larger. What kind of mutat…
- During meiosis homologous chromosomes line up. In the diagram above, there is a mutation in homolog 2 which creates the loop as shown. What kind of mutation is this most likely?