Polydactyly Is Expressed When an Individual Has Extra Fingers And/or

question 5

Multiple Choice

Polydactyly is expressed when an individual has extra fingers and/or toes. Assume that a man with six fingers on each hand and six toes on each foot marries a woman with a normal number of digits. Having extra digits is caused by a dominant allele. The couple has a son with normal hands and feet, but the couple's second child has extra digits. What is the probability that their next child will have polydactyly?

• A) 3/4
• B) 1/32
• C) 7/16
• D) 1/2
• E) 1/8

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Definitions:

Phallic Stage

A phase in Freud's psychosexual development theory, occurring from approximately ages 3-6, where the libido's focus is on the genital area and children discover differences between males and females.

Self-defeating Humor

A type of humor in which individuals make themselves the target of jokes, potentially lowering their own self-esteem for the sake of laughter.

Affiliative

Referring to behaviors that promote social connection, such as cooperation and building relationships.

Self-enhancing

Involves behaviors or thoughts that serve to maintain or increase an individual's self-esteem or positive self-view.