EVERYDAY SCIENCE

Detailed explanation-1: -The genus (plural, genera) is the taxonomic rank between family and species. The groups of organisms in a genus share many structural similarities and are very closely related. Members of a genus are more closely related to each other than they are to other genera in the same family.

Detailed explanation-2: -Amoeba and Euglena are more closely related to each other than any other pair of organisms as they both belong to the Phylum Protista and show similar characteristics.

Detailed explanation-3: -Two species within the same genus likely share a recent common ancestor in their evolutionary history. These two species would be more closely related to each other than two species classified into different families.

Detailed explanation-4: -When members belonging to the same genus, but different species interbreed, they could produce a sterile/infertile offspring. The most well-known example is that of the mule, which is the product of a cross between a male donkey and a female horse. These belong to the same genus Equus, but different species.