CBSE Class 12-science Answered
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Asked by sherry.sharma771 | 30 Jan, 2023, 08:05: PM
Expert Answer
The above figure shows translocation.
There are four types of chromosomal mutations:
- Duplication: When the sister chromatids are not the replica of each other and are not able to split in the middle due to some redundancy in the genes of that sequence, duplication occurs. These sister chromatids are separated into different cells where they overexpress the traits and produce more proteins.
- Deletion: Deletion of a part of a chromosome during meiosis resulting in the break-off in the chromosome and losing the part is deletion. Deletion is a fatal mutation as it can cause the death of the zygote if the sequence lost is vital for survival.
- Translocation: When the broken piece of the chromosome is not completely lost but it gets attached to a different, non-homologous chromosome that has also lost a part. This is referred to as translocation. It can cause serious problems due to the genes encoded in the wrong location.
- Inversion: A part of a chromosome breaks off and is inverted. It then attaches itself to the same chromosome. This is referred to as inversion. This type of mutation is referred to as a silent mutation.
Answered by Sheetal Kolte | 31 Jan, 2023, 12:18: PM
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