Which experimental approach would be most effective and easiest to clearly determine the evolutionary relationship between these two organisms?

a. sequence the same gene in both species to compare their similarity.

b. dissect specimens of both species to look for homologous structures.

c. search fossil databases to locate a common ancestor.

d. evaluate cells from both species to determine whether they contain enzymes.

I have two pictures; one of an orange starfish and another of a medium-sized green snake. I am having trouble deciding on this, but I think it is either A or B.

i cant figure it out either are you on connexus

Sorry I'm late but yeah I'm on connexus haha

To determine the evolutionary relationship between two organisms, it is important to choose an experimental approach that provides reliable evidence. Among the options given, sequencing the same gene in both species (option A) would be the most effective and easiest way to determine their evolutionary relationship.

Here's how you can arrive at this conclusion:

A. Sequence the same gene in both species to compare their similarity:

By sequencing the same gene in both the orange starfish and the medium-sized green snake, you can compare their genetic similarities. Evolutionary relationships are often inferred based on the level of genetic similarity between different species. The more similar the genes, the closer the evolutionary relationship. This method is effective because genes carry the hereditary information and can help reveal evolutionary connections.

B. Dissect specimens of both species to look for homologous structures:

Dissecting specimens and examining homologous structures (similar structures with a common evolutionary origin) can provide some insight into evolutionary relationships. However, in this case, comparing the genetic information directly through sequencing (option A) would be more effective and easier.

C. Search fossil databases to locate a common ancestor:

Searching fossil databases for a common ancestor can provide important information on the evolutionary history of organisms. However, this method may not always lead to a clear understanding of the evolutionary relationship between two specific organisms, as fossils are not always available or may not represent a complete picture of evolutionary history.

D. Evaluate cells from both species to determine whether they contain enzymes:

Evaluating the presence of enzymes in cells does not directly provide information about the evolutionary relationship between two organisms. While enzymes play a crucial role in many biological processes, they are not the best indicator of evolutionary relatedness.

Therefore, considering the options provided, sequencing the same gene in both species (option A) would be the most effective and easiest way to clearly determine the evolutionary relationship between the orange starfish and the medium-sized green snake.