Examlex
A neuron fires an impulse by the all-or-____________________ law.
Dizygotic Twins
Also known as fraternal twins, these are two siblings born at the same time who have developed from two different eggs fertilized by two different sperm cells.
Homozygous
Describes an organism with two identical alleles for a particular trait or gene.
Heterozygous
Possessing two different alleles of a gene, one inherited from each parent, resulting in variation of a genetic trait.
Infant Mortality
Death within the first year of life.
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