Defining species - Topic 1

Question 1

Why do we need multiple definitions of a species?

Answer 1

Multiple definitions of species are required because some species definitions/concepts cannot be applied to organisms that do not reproduce sexually

Question 2

What are the two ways to define a species?

Answer 2

• A biological species is any two organisms that can reproduce to make fertile offspring
• A phylogenetic species is the smallest group of organisms that share a common ancestor and can be distinguished by a unique set of morphological and or genetic traits

Question 3

How to name a species?

Answer 3

Binomial nomenclature is the internationally recognized naming system and it is Latin or Greek in origin
Species are named by genus and species names

Question 4

What are interspecific hybrids?

Answer 4

Crossing of two species that are from within the same genus. They do not produce fertile offspring