A Testcross of Trihybrid Drosophila Produced the Following Phenotypes and Number

question 22

Multiple Choice

A testcross of trihybrid Drosophila produced the following phenotypes and number of offspring. A table showing phenotype and the number of offspring with each phenotype is below. A plus sign is used for wild-type phenotype; a letter indicates the mutant phenotype for that gene. $\begin{array} { l r } + + + & 669 \\a b c & 653 \\+ + c & 121 \\a b + & 139 \\+ b + & 2280 \\a + c & 2215 \\+ b c & 3 \\a + + & 2\end{array}$
-Which gene pair is closer together; i.e.there are fewer map units between them?

• A)a ? b
• B)b ? c
• C)a ? c
• D)a ? b and b ? c are the same length
• E)a ? c and b ? c are the same length

---

Definitions:

Immediate Supervisor

An individual's direct overseer in a work environment, responsible for overseeing their day-to-day tasks.

Low-Tech

Describes products, technologies, or industries that involve fewer advancements or complexities in their operation, often characterized by manual or simpler processes.

Computer-Based Training

Educational or training programs delivered via a computer, often used for enhancing skills or providing new information.

E-Learning

The use of digital platforms and resources to facilitate learning outside of a traditional classroom environment.