In Humans, Male-Pattern Baldness Is Controlled by an Autosomal Gene

question 13

Multiple Choice

In humans, male-pattern baldness is controlled by an autosomal gene that occurs in two allelic forms. Allele Hn determines nonbaldness, and allele Hb determines pattern baldness. In males, because of the presence of testosterone, allele Hb is dominant over Hn. If a man and woman both with genotype HnHb have a son, what is the chance that he will eventually be bald?

• A) 0%
• B) 25%
• C) 33%
• D) 50%
• E) 75%

---

Definitions:

Observational Learning

Gaining behaviors by observing and emulating others.

Aggressive Behaviour

Actions intended to harm or cause discomfort to another, driven by various factors including environmental, biological, and psychological.

Physical Punishment

The use of physical force with the intention of causing a child to experience pain, but not injury, for the purpose of correction or control.

Operant Behaviour

A type of learning where behavior is controlled by consequences (reinforcements or punishments).