Which of the following is commonly used to determine phylogeny?

• A. Morphological characteristics
• B. Genetic sequences
• C. Behavioral traits
• D. Geographical distribution

Answer: (B)

Verified step by step guidance

1. Understand the concept of phylogeny: Phylogeny refers to the evolutionary history and relationships among species or groups of organisms. It is often depicted as a phylogenetic tree.
2. Recognize the importance of genetic sequences: Genetic sequences, such as DNA or RNA, provide detailed information about the genetic makeup of organisms. These sequences can be compared across different species to identify similarities and differences.
3. Learn how genetic sequences are used in phylogenetic analysis: Scientists use techniques like sequence alignment and molecular phylogenetics to analyze genetic sequences. This involves comparing sequences to find conserved regions and mutations that indicate evolutionary relationships.
4. Consider other methods: While genetic sequences are commonly used, morphological characteristics, behavioral traits, and geographical distribution can also provide insights into phylogeny. However, genetic sequences offer a more precise and objective method.
5. Explore the tools and software used: Familiarize yourself with bioinformatics tools and software that assist in phylogenetic analysis, such as BLAST for sequence alignment and MEGA for constructing phylogenetic trees.