Which of the following statements about the pathogen-specific response is true?
A. The pathways involved always trigger the hypersensitive response.
B. The pathogen is recognized by its avr gene product.
C. There is never a gene-for-gene response.
D. If the R gene product is not triggered, no disease will occur.
E. Avr and R gene pairs have been cloned in species pathogenized by microbes, fungi, and insects.
B. The pathogen is recognized by its avr gene product.
A hypersensitive response in a plant will be initiated if an R gene (from the plant) binds to an avr gene (from the pathogen). This response is called the "gene for gene hypothesis".
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normal “cystic fibrosis” protein?
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The acrosome contains enzymes that:a
digest the zona pellucida. b. digest the endometrium. c. stimulate ovulation. d. stimulate sperm motility. e. inhibit premature ejaculation.
Many prokaryotes thrive in ________ environments, which lack oxygen
Fill in the blank(s) with correct word
Ribozymes are
A. catalysts for DNA splicing. B. ribosomes which catalyze reactions. C. catalysts for RNA editing. D. unique to prokaryotes. E. unique to eukaryotes.