An organism's genotype describes its specific combination of alleles. for example, an aa genotype is heterozygous for the a allele. an organism's phenotype describes a visible trait, such as tall height, brown eyes, or black fur. how does genotypic variation occur?

Which muscle is responsible for inhalation ?

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls

The diagram shows a nerve cell. which row in the table labels the diagram correctly?