Which of the following images represents the expected results of a DNA gel for three individuals with different genotypes-homozygous dominant (lane 1), heterozygote (lane 2), and homozygous recessive (lane 3)? 
Definitions:
Pulse Oximetry
A non-invasive method to measure the oxygen saturation level of the blood, often using a sensor placed on a fingertip.
Cyanotic
Refers to bluish discoloration of the skin and mucous membranes due to insufficient oxygen in the blood.
Pulse Deficit
The difference between the heart rate and the palpable pulse rate, which can indicate cardiac dysfunctions such as arrhythmias.
Apical
Pertaining to the tip or apex of an organ or structure, such as the apex of the heart.
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