What is unique about a brittle star?

What does the term “metamerism” refer to?

A bacterium gaining the ability to feed on citrate due to a random mutation would be an example of…

What organism is the vector of Wucheria bancrofti?

Why were hookworms a common parasite in the American South in the late 1800s and early 1900s?

Mycobacterium ulcerans is an infectious bacterium of many clades. Since the ulcerans DNA was detected across multiple clades, this could mean…

Five species (V, W, X, Y, Z) are being compared based on the presence or absence of five derived traits. The following observations were made: Species Y lacks all derived traits and serves as a baseline for comparison. Species V and W share three derived traits, making them very similar. Species Z shares some traits with both species V and W but has fewer traits overall. Species X has two unique traits that distinguish it from the others. Which of the following statements best describes the evolutionary relationships among these species?

Imagine you have a list of four different grasshoppers: a green, a black, a brown, and a grey variant. In an environment where the surface is more tropical, which organism is most likely to survive?

Where do hookworms tend to settle in the human body?

Under which phylum are roundworms classified?