Gene mutations take place in:
Correct answer: C. Deoxyribonucleic acids
- A. Ribosomes
- B. Chloroplasts
- C. Deoxyribonucleic acids
- D. None of them
Explanation
Gene mutations can occur in deoxyribonucleic acids (DNA). DNA is the genetic material present in the nucleus of eukaryotic cells and in the nucleoid region of prokaryotic cells. It carries the instructions for the synthesis of proteins and other cellular components. Mutations can arise spontaneously or as a result of exposure to mutagenic agents such as radiation or certain chemicals. These mutations can involve changes in the DNA sequence, such as substitutions, insertions, or deletions of nucleotides. Gene mutations can affect the structure or function of proteins encoded by the mutated genes, potentially leading to various genetic disorders or abnormalities. Ribosomes are cellular structures responsible for protein synthesis. They are not directly involved in gene mutations. However, mutations in genes that encode ribosomal proteins can affect the functioning of ribosomes, leading to abnormalities in protein synthesis. Chloroplasts are organelles found in plant cells and some other eukaryotic organisms. They are involved in photosynthesis, the process by which plants convert sunlight into energy-rich molecules. Chloroplasts contain their own DNA, known as chloroplast DNA (cpDNA), which encodes some of the proteins required for photosynthesis. Mutations can occur in the cpDNA, leading to alterations in the photosynthetic process. Therefore, the correct option is "Deoxyribonucleic acids" since gene mutations primarily occur in the DNA molecules.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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