During the initiation of nitrogen-fixation nodules, the Rhizobium bacteria release what type of molecules to signal the host plant?
A. sugars
B. proteins
C. transcription factors
D. flavonoids
E. Nod factors
E. Nod factors
Once the bacteria receive chemical signals called flavonoids from the plant root hair, they release chemical signals called Nod factors. This signals the root hair to grow and curl around the bacteria and the nodule begins to form.
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Mobile DNA elements are more common in the genomes of
A) Archaea. B) hyperthermophiles. C) rapidly evolving species. D) pathogens.
Phenotypic variation among individuals with the same genotype is known as genetic variance
a. True b. False Indicate whether the statement is true or false
Plasmodium is a(n)____
a. apicomplexan b. diatom
c. ciliate d. dinoflagellate e. flagellated protozoan
The molecular bases for approximately 60 percent of dog inherited diseases are similar or identical to those found in humans
Indicate whether the statement is true or false