Examlex
There are numerous fish genera that have individuals that can change their sex during their lifetime.This is referred to as
Sperm and Ovum
The male and female gametes, respectively, whose union during fertilization results in the formation of a zygote, leading to pregnancy.
Zygote
The single cell formed from the union of two gametes, a sperm and an ovum.
Fraternal Twins
Siblings born at the same time from two separate eggs fertilized by different sperm cells, resulting in genetically unique individuals.
Sound Waves
Vibrations that travel through the air or another medium, which can be heard when they reach a person or animal's ear.
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