Echinoderms Are Classified as Bilateria,but Although They Start Out as Bilateral

question 52

Multiple Choice

Echinoderms are classified as Bilateria,but although they start out as bilateral larvae,they change into radially symmetrical adults.You might hypothesize that their genes controlling the development of radial symmetry are

• A)different from those controlling development of symmetry in all other radially symmetrical animals.
• B)similar to genes controlling body form in Porifera.
• C)similar to genes controlling body form in Ctenophora.
• D)similar to genes controlling body form in the lophophorates.
• E)similar to a common set of genes controlling body form in Ctenohora,and lophophorates.

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Definitions:

Medications

Substances used to treat or prevent disease and improve health, including drugs prescribed by healthcare professionals.

Studentized Range Statistic

A statistical measure used in significance testing of the difference between the highest and the lowest means in a set, taking into account sample size.

Tukey's Multiple Comparison

A statistical method used to find which means among a set of means differ from the rest after conducting an ANOVA test.

Fisher's LSD

A statistical method used to compare means while controlling for familywise error rate in the context of an ANOVA.