What is the relationship between DNA sequences and evolutionary divergence?

Prepare for the VCE Biology Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

The relationship between DNA sequences and evolutionary divergence can be understood through the concept of mutations. As species evolve and diverge from a common ancestor, genetic changes accumulate. These changes primarily arise through mutations – alterations in the DNA sequence. Over time, these mutations can lead to differences in the genetic makeup of diverged species.

As more mutations occur and are propagated through generations, the DNA sequences of these species become increasingly distinct from each other. Therefore, an increase in mutations corresponds to a greater degree of divergence between species, making the statement about increased mutations leading to more differences accurate. This principle forms the basis for understanding the evolutionary process, where genetic variation provides the raw material for natural selection and adaptation.

The other options do not accurately capture this relationship: recent divergence implies more similarity in DNA, not that all species share identical sequences; diverged species typically show differences in amino acid sequences due to accumulated variations. Thus, the correct understanding lies in recognizing that increased mutations are a driving force behind evolutionary divergence.

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