A study was conducted to investigate the levels of calcium and growth hormone excreted in chicken dung on a major chicken farm.The variances (V)were calculated and are shown below. 
a.Calculate the narrow-sense heritability for both traits (calcium and growth hormone levels).
b.Which trait, if any, will most likely respond to artificial selection?
Definitions:
Serotonin
A neurotransmitter involved in the regulation of mood, appetite, and sleep, and implicated in depression when levels are insufficient.
Tardive Dyskinesia
A neurological disorder characterized by involuntary, repetitive body movements, often resulting from long-term use of antipsychotic medication.
Dopamine Receptor Sites
Specific locations on nerve cells in the brain that interact with dopamine to transmit signals related to pleasure, reward, and motor function.
Long-term Use
Refers to the extended duration of applying or engaging with a substance, tool, or practice.
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