Q.17 The study of evolutionary relationships is known as
- (A) genomics
- (B) proteomics
- (C) phylogenetics
- (D) genetics
The study of evolutionary relationships is known as phylogenetics, which reconstructs organismal histories using molecular, morphological, and fossil data. This SEO-optimized article answers the MCQ: The study of evolutionary relationships is known as (A) genomics, (B) proteomics, (C) phylogenetics, (D) genetics—essential for molecular biology, biotechnology, and evolutionary genetics students.
Correct Answer: Option (C) Phylogenetics
Phylogenetics analyzes evolutionary relationships through phylogenetic trees, inferring common ancestry from shared derived characters (synapomorphies) in DNA sequences, proteins, or morphology.
Maximum likelihood, Bayesian inference, and neighbor-joining methods build trees from sequence alignments, crucial for understanding microbial evolution in your fermentation and hairy root research (Q.11).
Explanation of All Options
Each term studies biological information but at different scales:
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(A) Genomics: Incorrect. Studies entire genome structure, function, evolution—not organismal relationships.
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(B) Proteomics: Incorrect. Analyzes complete protein sets within organisms, not evolutionary histories.
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(C) Phylogenetics: Correct. Specifically reconstructs evolutionary trees showing divergence times and relationships.
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(D) Genetics: Incorrect. Broader study of heredity, genes, variation—not focused on evolutionary relatedness.
Option Focus Area Studies Evolutionary Relationships? Example Application (A) Genomics Complete genomes No—genome content Sequencing YACs (Q.4) (B) Proteomics All proteins No—protein expression N-glycosylation (Q.13) (C) Phylogenetics Evolutionary trees Yes Agrobacterium strains (D) Genetics Heredity/genes Partially—microevolution Drosophila ploidy (Q.8) Biotechnology Applications
Phylogenetics classifies microbial strains for fermentation optimization (Q.12,15,16), traces horizontal gene transfer in hairy roots (Q.11), and validates synthetic seed transformations—directly supporting your molecular genetics and bioprocess expertise.
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