Biology - Unit 1 - Taxonomy: Key to Organization: Concept of Species

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morphology

The form or appearance of an organism

reproductive isolation

The separation of organisms by some type of barrier

The concept of reproductive isolation relates more toward genetic _____ to distinguish between species.

differences

Computerized analysis of the "Lucy" type fossil has:

helped to add objectivity to the classification of fossil taxa

Which of the two methods for determining the species taxon would involve greater subjectivity?

morphology

The taxon "species" may be defined by which of the following concepts?

morphology reproductive isolation

Are horses and donkeys of the same species?

no, according to reproductive isolation yes, according to morphology

The complexity of life, combined with our limited knowledge:

sometimes prevents conclusive classification

The lowest rank of taxa is the

species

The classification of species by morphology involves:

structure shape colors physical traits

If you were to classify the many breeds of dogs by morphology, what would be inferred regarding species?

the numerous varieties might be classified as distinct species

Regarding the relationship of horses to donkeys:

they are identical species according to the concept of morphology they are separate species according to the concept of reproduction

What is the genus of the popular fossils which are similar to "Lucy"?

Australopithecus

Taxonomy is a rigorous, objective science.

False

The exact boundaries, limitations, and meaning of species is now known and agreed upon universally.

False

Horses and donkeys are not of the same species when defined by reproductive isolation because:

Offspring of a horse and donkey are unable to reproduce.

According to reproductive isolation, all the varieties of dogs would be considered as one species.

True

subjective

With bias

A subjective piece of information depends more on _____; an objective piece of information depends more on _____

a scientist's feelings, actual observations


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