There are two types of alleles. An allele that masks another is the allele. The one that is masked is called the allele. An organism that has the same alleles for a particular trait is . An organism that has different alleles for a particular trait is

littering streams           is the answer

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive