Examlex
What part of the heart's conduction system acts as the primary pacemaker?
Organs
Structures in organisms composed of different tissues performing specific functions essential for life.
Tissues
Groups of similar cells that perform specific functions in an organism.
Dominant Gene
A gene that expresses its phenotypic effect even when heterozygous with a recessive gene, therefore overriding recessive gene characteristics.
Genetic Map
A chart that shows the relative positions of genes and genetic markers on a chromosome based on the frequency of recombination between markers.
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