A Phylogenetic Species Is Defined as the Smallest Diagnosable Group

question 6

True/False

A phylogenetic species is defined as the smallest diagnosable group that contains all the descendents of a single common ancestor. True or False?

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Definitions:

Angelman Syndrome

A genetic disorder causing developmental delays, neurological problems, and sometimes, seizures.

Huntington's Disease

A genetic disorder characterized by the progressive breakdown of nerve cells in the brain, leading to deterioration of physical and mental abilities.

Dominant Mutant Allele

A variant of a gene that is more potent in expressing its trait even in the presence of its normal counterpart.

Heterozygote Advantage

A phenomenon in which the heterozygous condition confers some special advantage on an individual that either homozygous condition does not (i.e., Aa has a higher degree of fitness than does AA or aa).