Genes that are linked are:Question 5Select one:a.on the same chromosome.b.usually on the same chromosome.c.on different chromosomes.d.assort independently.

Question Analysis

We need to determine the correct statement regarding linked genes from the given options.

Relevant Concepts

Linked genes are genes that are located close to each other on the same chromosome. Because they are physically close, they tend to be inherited together during meiosis, unlike genes that are on different chromosomes or are far apart on the same chromosome.

Analysis of Each Option

1. a. on the same chromosome.
   This statement is true as linked genes are defined as being on the same chromosome.

2. b. usually on the same chromosome.
   This statement is also generally true, though "usually" adds ambiguity that could imply exceptions.

3. c. on different chromosomes.
   This statement is false; linked genes cannot be on different chromosomes.

4. d. assort independently.
   This statement is false; linked genes do not assort independently due to their proximity.

Conclusion

The best option that accurately defines linked genes is a. on the same chromosome, since that is the most precise description without ambiguity.

Final Answer

a. on the same chromosome.