The X chromosome partly due to its size advantage over the Y chromosome.
An instrument used to enlarge small objects called a microscope. Even at the cellular level, some microscopes can be used to study an object, enabling researchers to view a cell's form as well as its nucleus, mitochondria, or other organelles.
The primary components of a standard biological microscope are the objective lens, ocular lens, lens tube, stage, & reflector. The objective lens enlarges an object that has been placed on the stage. An enlarged image can be seen via the ocular lens after the target is focused.
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