Examlex
The "lock-and-key" model of enzyme function explains how the protein and substrate join.
Zygote
The fertilized egg, formed by the union of sperm and egg.
Chromosomes
Structures in the nucleus of each cell that contain the genes, the units of hereditary transmission. A human cell has 46 chromosomes arranged in 23 pairs.
Genetics
The study of genes, heredity, and the variations in living organisms that are influenced by their DNA.
Environment
The environment refers to the physical, chemical, and biological factors and conditions that influence the life and development of organisms.
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