The specific relationship between a legume and its mutualistic Rhizobium strain probably depends on
A) each legume having a chemical dialogue with a fungus.
B) each Rhizobium strain having a form of nitrogenase that works only in the appropriate legume host.
C) each legume being found where the soil has only the Rhizobium specific to that legume.
D) specific recognition between the chemical signals and signal receptors of the Rhizobium strain and legume species.
E) destruction of all incompatible Rhizobium strains by enzymes secreted from the legume’s roots.
Four main models that describe the relationship between ecosystem function and biodiversity.
Type II Tissue Specific Reactions
Relationship between the number of CAG repeats in a gene and the age of onset of Huntington disease.
Effects of Leptin on Obesity in Mice of the Ob Strain
Relationship between Latitude and Income per Capita
The relationship between maternal age and the frequency of trisomy 21 (Down syndrome). The risk incr