Heterochromatin is associated with
A) differential gene expression.
B) gene silencing.
C) mRNA translation.
D) heterozygotes.
E) A, B, and C only
B
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Secondary metabolites that function to protect plants from viral, fungal and bacterial pathogens are
a. systemins. b. phytoalexins. c. PR proteins. d. R genes. e. heat-shock proteins.
Which of the following molecules are signal molecules for a receptor tyrosine kinase?
1.insulin 2.epidermal growth factor 3.nerve growth factor 4.platelet derived growth factor 5.All of the choices are correct.
In ______________________________, radioactive materials are implanted into the tissues to be treated.
Fill in the blank(s) with the appropriate word(s).
Cryptococcosis can include
A) Bone infection B) Pulmonary infection C) Meningitis D) Septicemia E) All of these choices are correct