Giraffes have long necks that allow them to reach more food sources in their habitat. The long neck trait is an example of
A. selection.
B. adaptation.
C. radiation.
D. homology.
I'll be glad to check your answer.
I think its adaptation but selection can also be considered.
The long neck trait of giraffes is an example of B. adaptation.
To arrive at this answer, we can analyze the characteristics of the given options and understand their meanings.
A. Selection: Selection refers to the process by which certain traits are favored or selected for in a population through mechanisms like natural selection or artificial selection. While giraffes' long necks can be seen as an outcome of selection, it doesn't fully capture the specific trait of a long neck being an adaptation for reaching food sources.
B. Adaptation: Adaptation refers to the process or result of organisms adjusting to their environment by developing specific traits that enhance their survival or reproduction. The long neck of giraffes is an adaptation because it allows them to reach the leaves of tall trees, which are otherwise out of reach for other herbivores.
C. Radiation: Radiation, in the context of evolution, refers to the rapid diversification of a group of organisms into different forms or species in response to new ecological opportunities. While giraffes are a part of the larger group of mammals and have evolved distinct characteristics, the long neck trait itself cannot be categorized as radiation.
D. Homology: Homology refers to the similarity of traits between different organisms due to their shared ancestry. In the case of giraffes, their long necks are not similar to those of other organisms due to shared ancestry but rather a unique adaptation specific to their environment.
Therefore, the most appropriate answer is B. adaptation.