Question
Blue flying fish live in the upper layers of the ocean. Blue flying fish have enlarged pectoral fins that enable them to glide for 400 meters above the ocean surface and appear to fly. Which statement best describes how natural selection led to enlarged pectoral fins in blue flying fish? A. Fish were able to live both on land and in the water as a result of their larger pectoral fins. B. Fish changed their DNA to express enlarged pectoral fins , changing the allele frequency of the population. C. Fish were able to glide out of the ocean and into other bodies of water to mate with other species. D. Fish with enlarged pectoral fins were able to glide out of the ocean to escape predators , increasing their fitness.
Answer
4.3
(298 Votes)
Zephyr
Veteran · Tutor for 10 years
Answer
'D'
Explanation
## Step 1The problem discusses the concept of natural selection, which is a process by which species evolve over generations, developing traits that enhance their survival in their specific environments. ## Step 2Looking at the options, we need to identify the one that best describes this process. Statement D correctly explains this concept, emphasizing that the blue flying fish's enlarged pectoral fins allow them to escape from predators by gliding out of the ocean.## Step 3The other options either provide incorrect explanations (like B, which suggests that fish can change their DNA to express enlarged pectoral fins, which is not how natural selection works) or describe other evolutionary phenomena (like A and C, which allude to the process of biological adaptation, but not natural selection per se).