If Both Parents Have Brown Hair Because Both Carry Two

question 39

Multiple Choice

If both parents have brown hair because both carry two alleles for brown hair, their children will also have brown hair, but it might be a different shade of brown than either parent. Why is this? Isn't brown brown?

• A) The effect of an allele changes depending how old the parents are.
• B) People's hair often gets darker as they get older.
• C) Several different genes are involved in hair color, and those might differ between the parents and therefore their children.
• D) Traits tend to vary quite a bit between siblings and parents, so it's unlikely their hair color would be identical.
• E) What one person describes as "brown" might not be exactly the same as what another person says is "brown."

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Definitions:

Short-run

A period in which at least one input is fixed while others can be varied to change the level of output.

Wage Rates

The standard amount of compensation a worker receives for labor, typically expressed per hour, day, or piece.

Sticky Downward

Describes prices or wages that are resistant to decrease even in conditions where economic theory suggests they should fall, contributing to slow adjustments in markets.

Long-run Aggregate Supply

Long-run aggregate supply represents the total output of goods and services that an economy can produce when it is operating at full capacity, unaffected by the price level in the long term.