You are given the task of finding all the information that you can about a newly discovered species. Unfortunately the only material you have to study is a small tissue sample. You are able to sequence the DNA of this animal from the sample, and in doing so you find that the animal has multiple clusters of Hox genes. Without looking further, what can you conclude about this species? Check all that apply.
A. It has the potential for tremendous structural complexity.
B. It is endothermic.
C. It is a vertebrate.
D. It is a chordate.
E. It is a primate.
Answer: D
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The difference between a subspecies and biotype is:
a. a subspecies has the same genetic makeup. b. a subspecies has a differential expression of the same genes. c. a subspecies is genetically different than the type species. d. a biotype and subspecies are the same.
How do primary producers provide energy for the food chain?
A. They break down organic molecules into inorganic elements. B. They make their own organic molecules via photo- or chemosynthesis. C. They receive energy from secondary consumers. D. They pass on organic substances from primary consumers.
This animal as an adult has radial symmetry,
an internal skeleton, fluid-filled feet, and is a deuterostome. This animal is ___.
a. a sea star b. a jellyfish c. a slug d. an isopod e. more than one of these
A scientist is studying several areas along an elevation gradient. Her study involves prescribed burns (purposefully set, low-intensity fires) in the different areas, followed by a comparison of the type and abundance of organisms that colonize them over the next ten years. What scale best describes her study?
A. Population ecology B. Physiological ecology C. Ecosystem ecology D. Organismal ecology E. Community ecology