How will you identify fertilized egg from unfertilized egg?

You can't identify a fertilized egg from an unfertilized egg just by looking at it. Here's why:

Visual Differences:

* Externally: Both fertilized and unfertilized eggs look the same on the outside. They have the same shape, size, and shell color.

* Internally: The only way to tell the difference is to look at the egg's internal structure, which requires a microscope. A fertilized egg will have a developing embryo inside, while an unfertilized egg will not.

Other Methods:

* Fertility Testing: For chickens and other fowl, egg farmers can use candling to look for a dark spot called a "blood ring," indicating a fertilized egg. However, even this isn't always accurate.

* Hatching: The only sure way to know if an egg is fertilized is to see if it hatches.

Important Note: It's important to understand that fertilization occurs inside the hen's body, not outside. The eggs you buy at the store are typically unfertilized.

Let me know if you have other questions!