For each chromosome contributed by the sperm there is a corresponding chromosome contributed by the egg, there are two chromosomes of each kind, which together constitute a pair.
Thomas Hunt Morgan
The egg of every species of animal or plant carries a definite number of bodies called chromosomes. The sperm carries the same number. Consequently, when the sperm unites with the egg, the fertilized egg will contain the double number of chromosomes.
Thomas Hunt Morgan
The test for whether or not you can hold a job should not be the arrangement of your chromosomes.
Bella Abzug
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