Which of the following post-transcriptional modifications allow multiple forms of protein products from the same gene sequence?
A. phosphorylation
B. methylation
C. alternative splicing
D. poly-A tail
E. 5’ nucleotide cap
Answer: C
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Which of the following statements most accurately describes the inference that can be made regarding the possible functional significance of FoxP2 in the evolution of human language?
A. FoxP2 is a highly conserved transcription fact that is a "language gene". Changes in the function of this gene in the human lineage were the key event that allowed language to evolve. B. FoxP2 is a developmental gene with pleiotropic effects. Because this gene is highly conserved among a group organisms that are capable of acoustic communication it must be involved in the evolution of human language. C. FoxP2 is a highly conserved transcription factor. Because songbirds whose FoxP2 has been knocked out are less capable of learning new songs, this gene is likely involved in the evolution of human language. D. FoxP2 is a developmental gene that affects acoustic communication in a range of animal species. Because the human gene shows an elevated rate of non-synonymous to synonymous mutations in the human lineage, changes to the function of this gene in the humans may have contributed to the evolution of language.
What is a factor that drives animal migration?
A. seasonal availability of food B. nest availability C. hunting pressure D. intraspecific competition E. tidal patterns
Speciation occurs ____
a. after populations become reproductively isolated b. when mutations generate observable differences c. when transitional forms develop between different populations d. when natural selection pressures reach their maximum e. randomly as mutations build up in a population
You have recently identified a novel protein and obtained its sequence. How could you use this sequence to predict the function of the protein?
A. by looking for conserved domains B. by using the sequence to make antibodies against the protein C. by determining the DNA sequence that could encode the protein D. by determining the secondary structure of the protein