Introns and an exons are removed from Gene 1 and inserted into Gene 2. What could happen to the protein product as a result of this mistake?
A. Nothing; Gene 2 receives all of its necessary exons so the protein will be translated correctly.
B. Only the first segment of Gene 2 will be translated into a protein, therefore the protein will be nonfunctional.
C. All of Gene 1 and 2 will be translated into proteins; there is an insertion of an Exon 2 from Gene 1 into Gene 2, the protein may not function properly. Natural selection may eliminate this protein or if the new protein provides a beneficial trait it may increase in prevalence in the population.
D. The start codon from Gene 1 is not present after intron removal, therefore this gene will not be translated.
E. Only Gene 1 will be translated into a protein since Gene 2 has an extra Exon # 2.
C. All of Gene 1 and 2 will be translated into proteins; there is an insertion of an Exon 2 from Gene 1 into Gene 2, the protein may not function properly. Natural selection may eliminate this protein or if the new protein provides a beneficial trait it may increase in prevalence in the population.
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Which of the following describe the placenta? (Check all that apply.)
_____ The bloods of the mother and the embryo come in close contact without mixing. _____ The placenta neutralizes toxins like alcohol and drugs before they reach the fetus. _____ Oxygen diffuses from the mother to the embryo. _____ Carbon dioxide diffuses from the embryo to the mother. _____ The placenta provides nourishment and hormones to the embryo. _____ The antibodies made in the embryo protect the mother from infections.
What is the most likely source of various
hangover symptoms?
a. acetate b. acetaldehyde c. ethanol d. alcohol dehydrogenase e. carbon dioxide
The embryo develops from cells of the
a. blastocyst outer layers. b. blastocyst inner cell mass. c. gastrula mesoderm. d. gastrula ectoderm. e. gastrula endoderm
The shaded group includes all of the species that were derived from one common ancestor, this group could also be called a(n) 
A. paraphyletic taxon. B. homology. C. clade. D. polyphyletic taxon. E. phylum.