An intron is: a polypeptide that is clipped out of a larger protein post-translationally. an rna sequence that is removed during the processing of an rna molecule in the nucleus. part of an intact, mature mrna that leaves the nucleus. part of an rna transcript that is not present in the dna template. a type of transfer rna.

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

What are characteristics of minerals? select 3 choices

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred