Refer to the graph shown. Assume that the market is initially in equilibrium at a price of $10 and a quantity of 500 units. If the government imposes a $4 per-unit tax on this product, equilibrium quantity will change to: 
Definitions:
Heterozygous
A genetic condition where an individual has two different alleles at a gene locus.
Blood Type
A classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells, which can affect blood transfusions compatibility.
Identical Twins
Twins that originate from the same fertilized egg, sharing 100% of their genetic material and typically having very similar appearances.
Gene-Environment Correlations
Refers to the phenomenon that an individual's genetic makeup influences their exposure to certain environmental factors.
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