When Frederick Griffith infected mice with a virulent strain of Streptococcus pneumoniae, the mice
A. reproduced quicker.
B. became ill but lived.
C. died from pneumonia.
D. remained healthy.
Answer: C
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Midocean ridges form:
a. anywhere in the middle of the ocean. b. in subduction zones. c. where oceanic crust is cracked and magma is emerging. d. in deep ocean trenches.
A ________ is a specific segment of DNA that codes for the production of one functional product.
A. operator B. exon C. intron D. triplet E. gene
Eukaryotic transcription factors are best described as:
a. regulators of transcription initiation of operons. b. containing only a regulatory domain. c. containing only a DNA binding domain. d. containing a DNA binding domain plus one or more regulatory domains. e. imprinted genes.
____ promote cancer development, while ____ prevent cancer development
a. Oncogenes; tumor suppressor genes b. Tumor suppressor genes; homeobox genes c. Tumor suppressor genes; oncogenes d. Oncogenes; homeobox genes e. Homeobox genes; proto-oncogenes