Question

Similar DNA sequences in genes can be evidence of

A. binomial nomenclature.
B. mutations.
C. common ancestry.
D. different anatomy.

Answer 1

Similar DNA sequences in genes typically suggest evidence of common ancestry, a concept rooted in molecular systematics and the homology of the genetic code.

Step-by-step explanation:

Similar DNA sequences in genes can be evidence of common ancestry. Today's scientists compare DNA to understand evolutionary relationships, with greater similarities in DNA indicating a closer connection. This method, known as molecular systematics, utilizes molecular data to confirm classifications of organisms and to trace evolutionary lineages.

The genetic code's homology across species indicates a shared ancestor. Over time, as species diverge, their DNA sequences accumulate changes, revealing their evolutionary paths. This molecular evidence supports the formation of new species and traces phylogeny, alongside morphological evidence like homologous structures.

Therefore, the correct answer for the student's question would be C. common ancestry, which is supported by similar DNA sequences.

Answer 2

C. common ancestry.

Common ancestry is identified in the genes. Selection forces are the drives to these physical and composition changes of an organism however, it can be traced back.

Adaptation processes occur to help species survive and thrive in the ecological balance of life. Structural adaptations are physical features of an organism that adapted through time. An example of this are the bills of a bird and the fur of bears that they generally need for their survival; birds for hunting, and bears to protect them from low climate areas.