There is actually a specific reason why there are no female Namekians. It all comes down to the unique way in which Namekians reproduce. Unlike humans and many other species, Namekians do not have separate male and female individuals. Instead, they have a singular genderless form.
Namekians have the ability to reproduce asexually, meaning they can create offspring without the need for a mate. This is done by regurgitating eggs, which then hatch into new Namekian individuals. These eggs contain all the necessary genetic material to create new Namekians, and there is no need for two separate genders to contribute genetic material.
This asexual reproduction method is one of the key factors that contribute to the absence of female Namekians. Since there is no differentiation between male and female Namekians, the concept of gender as we understand it does not exist within their species.
It’s important to note that while Namekians do not have separate genders, they can still exhibit certain physical characteristics that we might associate with male or female individuals. For example, some Namekians may have more feminine or masculine features, but these are not indicators of their gender.
In the Dragon Ball series, we see that many Namekians, such as Kami and Piccolo, are referred to using male pronouns. This is likely due to the fact that the English language often defaults to using male pronouns when the gender of a person or creature is unknown or unspecified.
The absence of female Namekians is not due to any biological limitation or lack of ability to reproduce females. It simply stems from the unique asexual reproduction method of Namekians, which eliminates the need for separate genders.