How Does Losing or Acquiring Territory Affect the Brain Anatomy

question 15

Multiple Choice

How does losing or acquiring territory affect the brain anatomy and chemistry of an African cichlid fish?

• A)only the size of the brain is changed
• B)only the shape of brain is changed
• C)both the size and shape of the brain are changed
• D)the size of brain cells producing sex hormones are changed
• E)the size of brain cells producing territorial hormone are changed

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Definitions:

Phenotypes

The set of observable characteristics or traits of an organism, resulting from the interaction of its genotype with the environment.

Monozygotic Twins

Another term for identical twins, referring to siblings that develop from one zygote that splits and forms two embryos, sharing all their genetic material.

Dizygotic Twins

Also known as fraternal twins, are twins that develop from two different eggs fertilized by two different sperm cells.

Fraternal Twins

Also known as dizygotic twins, these are siblings born at the same time who have developed from two different eggs fertilized by two different sperm, thus they are genetically distinct and not identical.