One Major Reason Why Humans Are Born with Undeveloped Brains

question 153

Multiple Choice

One major reason why humans are born with undeveloped brains is that:

• A)this is the typical course of brain development for most animals.
• B)it allows the brain to adapt to a wide range of environments.
• C)from an evolutionary perspective,it confers greater advantages at birth.
• D)it allows greater biological resources to be devoted to heart and lung development.

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Definitions:

Recessive Allele

A variant of a gene that must be inherited from both parents in order to manifest its trait, as opposed to a dominant allele where only one copy is needed for expression.

Heterozygous Individuals

Organisms that have two different alleles for a given gene, resulting in genetic variation.

Phenotypic Expression

Phenotypic expression is the observable physical and physiological traits of an organism resulting from the interaction of its genetic makeup with the environment.