Cephalization, the Clustering of Neurons and Interneurons in the Anterior

question 4

Multiple Choice

Cephalization, the clustering of neurons and interneurons in the anterior part of the animal, is apparent in

• A) Hydra.
• B) cnidarians.
• C) Planaria.
• D) sea stars.
• E) invertebrate animals with radial symmetry.

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Definitions:

Independent Assortment

Alleles of unlinked genes segregate independently of each other during meiosis so that the gametes can contain all possible combinations of alleles.

Meiosis

A type of cell division that reduces the genetic material by half, resulting in four genetically distinct daughter cells, crucial for sexual reproduction.

Sex Chromosome

A type of chromosome involved in determining the sex of an organism, typically referred to as X or Y chromosomes in many species.

Male

Refers to the sex that is typically associated with the production of small gametes or sperm in the context of sexual reproduction.