How Did Bateson and Punnett's Work with Comb Morphology in Chickens

question 4

Multiple Choice

How did Bateson and Punnett's work with comb morphology in chickens differ from the dihybrid work of Mendel?

• A)They were working with sex-limited traits.
• B)Their F₂ offspring displayed 4 unique phenotypes, not the four combinations of two phenotypes expected in a Mendelian cross.
• C)½ of their combinations were lethal.
• D)The expression of their trait varied by the environment in which the chickens were raised.

---

Definitions:

Norepinephrine

A neurotransmitter involved in arousal and the stress response, also acting as a hormone in the fight or flight response.

Tardive Dyskinesia

A neurological disorder characterized by involuntary, repetitive body movements, often resulting from long-term use of certain psychiatric medications.

Antipsychotic Drugs

Medications used to manage psychosis, including delusions, hallucinations, paranoia, or disordered thought, primarily in conditions like schizophrenia and bipolar disorder.

Antianxiety Drugs

Medications prescribed to reduce or manage symptoms of anxiety disorders and conditions characterized by excessive worry or fear.