The Following Pedigree Shows the Inheritance of Attached Earlobes (Black

question 27

Multiple Choice

The following pedigree shows the inheritance of attached earlobes (black symbols) and unattached earlobes (white symbol) .Both alternative phenotypes are quite common in human populations. If the phenotypes are determined by alleles of one gene,then attached earlobes are inherited as:

• A)an autosomal dominant trait.
• B)an autosomal recessive trait.
• C)a dominant trait that could be either autosomal or X-linked.
• D)a recessive trait that could be either autosomal or X-linked.
• E)an X-linked dominant trait.

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Definitions:

Self-Serving Bias

The tendency to attribute one’s successes to dispositional causes and one’s failures to situational causes.

Dispositional Attribution

Attributing a behavior to some internal cause, such as a personal trait, motive, or attitude; an internal attribution.

Primacy Effect

The tendency to remember information that is presented first better than information that is presented later on.

Impression Formation

The psychological process by which individuals form opinions and judgments about other people based on available information.