Examlex
Because of the scarcity of labor in eighteenth-century America, women found employment outside the home as shopkeepers, printers, painters, and even doctors.
Y Chromosome
A sex chromosome typically found in males, paired with an X chromosome in XY sex-determination systems, playing a crucial role in male development and fertility.
X Chromosome
is one of the two sex chromosomes, with females typically having two X chromosomes and males having one X and one Y chromosome.
Zygote
The initial cell formed when a sperm cell fertilizes an egg cell, marking the beginning of human development.
Spermarche
A primary sex characteristic in males; a male’s first production of mature sperm, which signals the ability to reproduce sexually.
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