Examlex
What type of white blood cell typically has a bilobed nucleus and a cytoplasm filled with granules that appear deep red in an acidic stain?
Sexual Reproduction
A type of reproduction in which two gametes (usually, but not necessarily, contributed by two different parents) fuse to form a zygote. Compare with asexual reproduction.
Genetic Variation
The diversity in gene frequencies within a population, resulting from mutation, sexual reproduction, and other genetic processes, contributing to the population's adaptability.
Evolution
Any cumulative genetic changes in a population from generation to generation. Evolution leads to differences in populations and explains the origin of all the organisms that exist today or have ever existed.
Cell Theory
The scientific theory that the cell is the basic unit of life, of which all living things are composed, and that all cells are derived from pre-existing cells.
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