Question

c) explain one disadvantage to using a test cross.

Explanation:

Identify the purpose of a test cross

Determining an unknown dominant genotype by breeding with a homozygous recessive individual.

Analyze limitations and disadvantages

• Requires producing offspring, which is time-consuming for organisms with long gestation periods.
• Requires a large number of offspring to obtain statistically reliable results.
• Ethical concerns regarding breeding certain animal species.

Select the most direct disadvantage

The necessity of producing a large number of offspring over a long period to ensure statistical accuracy.

Answer:

A major disadvantage of using a test cross is that it requires producing a large number of offspring over a significant amount of time to obtain statistically reliable results, which is highly inefficient for organisms with long life cycles or low reproductive rates.