Question

A group of interbreeding organism is
(a)Genus
(b)Family
(c)Order
(d)Species

Answer 1

Hint: Interbreeding is the process of breathing which is between two different species having the same genus. It brings the separated genetic factors together. This changes the population of species and changes the composition of the gene pool which receives the population. The introduction of new alleles in the gene population increases the variability in the population which makes it possible for new combinations of traits.

Complete answer:
Species are a group of interbreeding organisms. It is a unit of biodiversity which is the basic unit of classification and taxonomic rank of an organism. It is the largest group of organisms which includes two individuals having appropriate sexes or mating types. They can produce fertile organisms typically by sexual reproduction. Each species is given a two-part name which is known as binomial. Species evolve into new species by exchanging genes with other species. They marched with other species or became extinct.

Additional Information:
 Genus:
 Genus is a taxonomic rank which is used to classify living organisms, fossils as well as viruses. The genus contributes to the first part of binomial nomenclature which is the name for each species within the genus. The genus is also known as the generic name in the scientific names. It is always capitalized and plays a vital role in the naming of organisms where it gets combined with the scientific name of species. Genus are classified as available or non-available. The available names are those which are published by the International Code of Zoological Nomenclature and by decisions of the International Commission on Zoological Nomenclature.
Family: Family is classified between the order and genus and is the eighth major hierarchical taxonomic rank. The naming includes codes by various international bodies by using specific suffixes. The suffix 'aceae' is used for the family of fungi, algae, and plants. The names of the family of animals and with the suffix 'idea'. It is used for evolutionary palaeontological, genetic studies as it is more stable than the lower taxonomic level which is genus and species.
Order: It is the taxonomic rank which is the classification of the organism and recognized by the nomenclature codes. It consists of the family which is a set of similar nature or character.
So, the correct answer is 'species'.

Note: A mule is an integrated organism that is a hybrid between a male donkey and a female horse. They share a common ancestor which is 4.5 million years old. During the middle paleolithic and early upper paleolithic, there is evidence for interbreeding between archaic and modern humans.