Question

fossils provide scientists with evidence that allows them to hypothesize how living organisms have evolved over time. tiktalik roseae was a unique organism that has been nicknamed the fishapod because it is believed to be a species that was part fish and tetrapods, the first four - legged animals. which evidence would scientist use to make the connection between ancestry of fish and tetrapods using tiktalik roseae? using transitional forms using relative dating studying decreasing complexity studying analogous structures

Explanation:

Tiktaalik is a transitional form. Transitional forms are organisms that have characteristics of both ancestral and descendant groups. In this case, Tiktaalik has features of both fish (e.g., fins, scales) and tetrapods (e.g., limb - like structures). Relative dating only gives the age of a fossil in relation to other fossils. Studying decreasing complexity is not relevant here as evolution is not a simple decrease in complexity. Homologous structures are similar in structure due to common ancestry but may have different functions. However, the key here is that Tiktaalik is a transitional form that bridges the gap between fish and tetrapods.

Answer:

A. using transitional forms