Examlex
Explain why Y chromosomes have no exchange of DNA during meiosis.Describe any relevant events that occur during meiosis,as part of your explanation.
Objective Lens
The part of a microscope or telescope that is closest to the object being observed, focusing light and creating an initial image.
Oil-Immersion Lens
A microscope lens designed to be used with a drop of oil between the lens and the slide, improving resolution by reducing light refraction.
Fine Focus Knob
A control mechanism on microscopes used to make precise adjustments to the focus, sharpening the image of the specimen.
Coarse Focus Knob
A control mechanism on microscopes used for making large adjustments in focus, allowing for the initial focusing of the microscope lens on the specimen.
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