Explain the mechanism of sex determination in insects like Drosophila and grasshopper.

Explanation

### Step-by-Step Solution

**Step 1: Introduction to Sex Determination in Insects**
- Sex determination in insects can vary among species. Here, we will discuss the mechanisms in Drosophila (fruit flies) and grasshoppers.

**Step 2: Sex Determination in Drosophila**
- In Drosophila, the sex determination mechanism is based on the genic balance theory rather than traditional sex chromosomes.
- The female Drosophila is homogametic with two X chromosomes (XX), while the male is heterogametic with one X and one Y chromosome (XY).
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