Which one of the following phylogenetic trees illustrates the relationship between Archaea, Bacteria and Eukarya?
The question involves selecting the correct phylogenetic tree that illustrates the accepted evolutionary relationship between Archaea, Bacteria, and Eukarya. Let's break down these relationships:
Key Concepts:
- Domains of Life: The three domains of life include Archaea, Bacteria, and Eukarya. This classification system is based on differences in the sequences of ribosomal RNA (rRNA) genes.
- Phylogenetic Relationships: In terms of evolutionary relationships, Archaea and Eukarya are more closely related to each other than either is to Bacteria. This is supported by molecular studies, especially those analyzing ribosomal RNA sequences.
Analyzing the Options:
- Option P: This tree suggests that Archaea and Eukarya are closely related, but it places Bacteria as the closest to Eukarya, which is incorrect.
- Option Q: This tree shows Bacteria branching off first, with Archaea and Eukarya being more closely related to each other—which is the correct representation of their evolutionary relationship.
- Option R: It shows Bacteria and Eukarya closer to each other, with Archaea branching last, which is incorrect.
- Option S: In this option, Bacteria and Archaea appear to be more closely related, which is incorrect.
Conclusion:
Among the given options, Option Q correctly represents the evolutionary relationship between Archaea, Bacteria, and Eukarya, with Bacteria branching off first.
Therefore, the correct answer is Option Q.
Important Questions from Phylogenetic trees
- Newts produce tetrodotoxin (TTX), a poison that targets sodium ion channels, for defense against their predators, garter snakes. Several species of garter snakes are resistant to newt TTX due to specific known amino acid substitutions in garter snake sodium channels. Which one of the following is best-suited to identify whether this adaptation in garter snakes has a single origin or multiple independent origins?
A phylogenetic tree representing the evolutionary relationship between various vertebrates is shown below.
Given this tree topology, which one or more of the following statements is/are correct?A phylogenetic tree for the evolution of two pigmentation traits in species of fish is shown for clades X, Y and Z. Genes A and/or B, if mutated, can cause dark pigmentation in the body.
Which one or more of the following statements is/are correct?- Whales and dolphins are hypothesized to have evolved along the northern shore of the Tethys Sea, prior to the Indian plate's collision with the Eurasian plate. To which one of the following animals are these aquatic mammals most closely related?
In the phylogenetic trees shown, the tips represent different species of geckos(labeled A to E) and the areas to which they belong. Which one of these is most consistent with the hypothesis that the geckos colonized the Western Ghats from Northeast India through the Eastern Ghats?
