KROK 1 2021 – Question 20 · KROK (Medicine) · Biology
A mutation has occurred in a cell in the first exon of the structural gene. The number of nucleotide pairs changed from 290 to 250. Name this type of mutation:
- A. Translocation
- B. Nullisomy
- C. Inversion
- D. Deletion
- E. Duplication
Hint
Compare the number of nucleotide pairs before and after the change, and decide what kind of gene mutation reduces that number within a single exon.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Biology
- A man complains of itching skin between the fingers of his right hand. He was diagnosed with scabies. Name the preventive measures against this…
- After examination, a man who lived in the Ural region, was diagnosed with taiga encephalitis. The causative agent of this disease could have been…
- After a thorough examination, a man, who has returned to Ukraine from the Central Asia, was provisionally diagnosed with spring-summer encephalitis…
- What type of disease inheritance results in men being affected by hemophilia, while women are the carriers of this disease?
- The synthesis rates of DNA, RNA, and necessary proteins are decreased in the cells of a human body and mitotic activity is insignificant. These…
- While studying maximally spiralized chromosomes of human karyotype the process of cell division was stopped in the following phase: