Question

in a simulation of genetics, a child inherits either a dominant or recessive allele from each parent. which of the following would be the best method for randomly determining which of two possible alleles a child inherits from the father?
a. rolling a six - sided number cube and using the number on the top side
b. throwing a dart at a dartboard hanging on a wall at a distance of 10 feet
c. blindly selecting from a bag filled with blue, green, red, and yellow beads
d. drawing from a deck of cards printed with either an uppercase or lowercase q

Explanation:

We need a method with two equally - likely outcomes.

• Option A: A six - sided number cube has 6 possible outcomes, not 2.
• Option B: Throwing a dart at a dartboard has many possible outcomes (different regions on the dartboard), not 2.
• Option C: Selecting from a bag of 4 - colored beads has 4 possible outcomes, not 2.
• Option D: A deck of cards with only two types (uppercase Q and lowercase Q) has 2 possible outcomes, which matches the two - allele (dominant and recessive) situation.

Answer:

D. Drawing from a deck of cards printed with either an uppercase or lowercase Q