Abiotic Factor-a nonliving condition or thing, as climate or habitat that influences an
 ecosystem and the organisms in <span>it
True</span>
        
             
        
        
        
YY and Yy would result in a plant with yellow seeds. This is because Y is dominant and yellow seeds would show with a dominant homozygous and a heterozygous. It can't be yy because that would be homozygous recessive 
        
             
        
        
        
Each person then has 4 total alleles that determine their eye color. The B allele (brown) is always dominant. The blue eye trait is always recessive.
        
                    
             
        
        
        
Nitrogen Fixation: Root and Bacteria Interactions. Nitrogen is an important macronutrient because it is part of nucleic acids and proteins. ... The most important source of BNF is the symbiotic interaction between soil bacteria and legume plants, including many crops important to humans.