Which Is Most Likely True Regarding the Presence of the Lactase

question 61

Multiple Choice

Which is most likely true regarding the presence of the lactase (LCT) allele in European populations?

• A) The LCT allele, which evolved in the European population, increased in frequency after the advent of agriculture.
• B) The LCT allele was brought to European populations by Russian steppe nomads.
• C) Early European farmers did not carry the LCT allele.
• D) a and c
• E) b and c

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Definitions:

Average Cost

The total cost divided by the quantity produced, measuring how much on average each unit of output costs to produce.

Average Fixed Cost

The total fixed costs of production divided by the quantity of output produced; it decreases as production increases.

Average Variable Cost

The total variable cost divided by the quantity of output produced, indicating the variable cost of producing each unit of output.

Total Variable Cost

The sum of all costs that vary with output level, including costs for raw materials, labor, and utilities that increase or decrease as production volume changes.