Which of the following statements about pseudogenes is false?
(a) Pseudogenes code for microRNAs.
(b) Pseudogenes share significant nucleotide similarity with functional genes.
(c) Pseudogenes are no longer expressed in the cell.
(d) There are estimated to be approximately 20,000 pseudogenes in the human genome.
(a)
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A polycistronic mRNA with six protein coding genes would have:
A. 1 start codon and 1 stop codon. B. 1 start codon and 6 stop codons. C. 6 start codons and 1 stop codon. D. 6 start codons and 6 stop codons. E. 3 start codons and 3 stop codons.
The replication of lagging strands of DNA differs from the replication of leading strands in that:
A: DNA is replicated as short fragments. B: RNA primers are required. C: Removal of RNA primers is required. D: All of the above
Hypoparathyroidism leads to a dramatic drop in blood calcium, which causes
A. tetany (convulsions). B. cretinism. C. sleepiness. D. mental retardation. E. lethargy and hair loss.
The sodium-potassium pump is important in maintaining cell volume because it __________.
Fill in the blank(s) with the appropriate word(s)