<span>starfish
</span> All normal eggs from the mother have an X chromosome while usually half the sperm cells from the father have a Y (male) chromosome and the other half have an X (female) chromosome and it is therefore the father's sperm that dictates which gender the embryo will take.
If the egg is fertilized by a sperm with a Y chromosome then the embryo will be a genetic male due to XY chromosome combination.
<span>If the egg is fertilized by a sperm with an X chromosome then of course the embryo will be a genetic female due to XX chromosome combination.</span>
For the answer to the question above, the answer is simply a "Scientific Theory"
<span>it is a well-substantiated and well-presented explanation of the natural world, it is based on repeatedly confirmed through observation and experiment of the said phenomena. These are not the wild guess but reliable facts of the real world events.</span>
Plucking is caused by ice