Hardy-Weinberg conditions were established in the lake after the asteroid hit. The fish population mated and produced the next generation. Scientists sampled 100 fish that were all offspring of the post-asteroid population. How many yellow fish will be among the 100 offspring sampled?
A) 4
B) 8
C) 15
D) 30
E) 32
A) 4
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The organization phases of development are regulated by
A. transcription factors. B. morphogens. C. segmentation genes. D. morphogens and transcription factors only. E. morphogens, transcription factors, and segmentation genes.
The technique called (northern/Southern/western) blotting is useful for using probes to identify specific DNA fragments that have been separated by electrophoresis
What will be an ideal response?
A very large gene, such as DMD, may take hours to transcribe mainly because
a. RNA polymerase may have difficulty clearing the promoter. b. long mRNAs form secondary structures that interfere with transcription. c. RNA polymerase has time-consuming error correction activity. d. many histone octamers may need to be modified or disassembled. e. there may be multiple abortive attempts at transcription.
Shingles, or herpes zoster, is caused by the virus that also causes
A. cold sores. B. chickenpox. C. smallpox. D. molluscum contagiosum. E. warts.