A single chromosome has Multiple Choice multiple genes each with a single allele. multiple genes each with multiple alleles. a single gene with a single allele. a single gene with multiple alleles. No answer is correct.

b brown mice / white sand dunes

i believe your answer would be c.. : )

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).