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Mutation was first discovered by?

seo-qna
Last updated date: 14th Jul 2024
Total views: 346.2k
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Answer
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Hint: A mutation is a change in the nucleotide sequence of an organism's, virus's, or extrachromosomal DNA's genome. Viral genomes may be made up of either DNA or RNA. Mutations occur as a result of errors in DNA or viral replication, mitosis or meiosis, or other forms of DNA damage (such as pyrimidine dimers caused by exposure to ultraviolet radiation).

Complete answer:
Hugo De Vries discovered mutations in Oenothera Lamarckiana. Evening Primrose is the common name for this herb. By experimenting on this herb, he was able to formulate observations. He took a regular plant and self-pollinated it in order to produce seeds. He discovered that when these seeds grew into plants, all of them were regular, with only slight variations. Some of the characters differed from their parents. These various plants gave rise to a few more distinct plants than their parents in subsequent generations. These minor variations were mutations by De Vries. He discovered that mutations occurred suddenly and were passed down through generations.

Additional information:
Genetic rearrangements are classified into four types: deletions, duplications, inversions, and translocations, which are frequently caused by chemical and nuclear agents. Deletions result in the obliteration of DNA or a chromosome. It can be as simple as the loss of a single base or as complex as the loss of a larger portion of DNA. Duplications occur in several copies of a gene which are most often caused by uneven crossover.

Note:
It was stated that a mutation is a shift in our DNA sequence that occurs as a result of errors during DNA replication or as a result of environmental factors such as UV light. Inversions, or variations in the direction of chromosomal regions, may be harmful if they include a gene or an important sequence involved in gene expression regulation. Translocations are a form of rearrangement that occurs when a portion of two separate chromosomes breaks and rejoins, resulting in the loss, repetition, or interruption of a DNA sequence or gene.