You have identified a gene with three exons and two introns. the exons are 200bp, 600bp, and 100bp in length consecutively, while the introns are 500bp and 400bp in length. the normal rna produced by this gene is approximately 900bp in length. however in neurons you identify an rna made from this gene that is 1400bp in length, what form of alternative splicing most likely occurred?
a. exon skipping
b. mutually exculsive exons
c. alternative 5' donor or 3' acceptor sites
d. intron retention

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

Antoine manages a number of apartment buildings that use natural gas for heating, cooking, and laundry. the scatter plot shows the correlation between the outside air temperature and antoine's natural gas bill. which type of correlation does the plot illustrate?