How Many of the Following Statements About Craniates Is (Are)correct

question 73

Multiple Choice

How many of the following statements about craniates is (are) correct?
1) Craniates are more highly cephalized than are noncraniates.
2) Craniates' genomic evolution includes duplication of clusters of genes that code for transcription factors.
3) The craniate clade is synonymous with the vertebrate clade.
4) Pharyngeal slits that play important roles in gas exchange originated in craniates.
5) The two-chambered heart originated with the early craniates.

• A) one of these
• B) two of these
• C) three of these
• D) four of these
• E) five of these

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Definitions:

Heuristic

A mental shortcut or rule of thumb that simplifies decision-making processes, often leading to quick, though sometimes inaccurate, judgements.

Algorithm

A step-by-step procedure or formula for solving a problem, often used in mathematics and computer science.

Morphemes

The tiniest units within a language that hold semantic value.

Validity

The extent to which a test measures what it claims to measure.