Genetic homology determines evolutionary relationships among organisms based on
A) the similarity of ribosomal RNA between species
B) the similarity of DNA between species
C) morphological similarities between species
D) the number of traits shared by two organisms

Question

Quizplus · Accepted Answer

Genetic homology refers to the similarity of DNA between two organisms. By comparing DNA sequences, scientists can determine the degree of relatedness between species and construct evolutionary relationships. This is because DNA sequences are inherited from ancestral species and reflect the history of how species have evolved over time.

Option A is partially correct, as ribosomal RNA can also be used to determine evolutionary relationships through a process called molecular phylogenetics.

Option C is not always reliable, as morphological similarities can be misleading, especially in distantly related organisms that may have evolved convergent traits.

Option D is vague and not specific enough to be a correct choice.

Genetic Homology Determines Evolutionary Relationships Among Organisms Based on