Gene and chromosomes show parallel behavior except:
Correct answer: A. Number
- A. Number
- B. Inheritance
- C. Heredity
- D. Composition
Explanation
Genes are specific sequences of nucleotides within DNA that reside on chromosomes. A chromosome is a larger structure that contains many genes. Therefore, while they both play roles in inheritance, heredity, and share similar composition, they do not match in number. Humans typically have 23 pairs of chromosomes, each containing multiple genes. Thus, the number is the key aspect where they do not exhibit parallel behavior. Options B, C, and D are incorrect because they describe areas where genes and chromosomes show parallel behavior.
This question appeared on the ETEA MDCAT 2014 paper, which you can sit online with every answer explained.
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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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