Examlex
At present, the most accurate indicator of evolutionary relatedness among organisms is the _______.
Hormones
Chemical messengers secreted by endocrine glands into the blood, coordinating and regulating activities within the body.
Sex Cell
Also known as a gamete, it's a specialized cell involved in sexual reproduction, including sperm in males and eggs (ova) in females.
Cervix
The lower part of the uterus in the female reproductive system that connects the uterus to the vagina.
Centimeters
A unit of length in the metric system equal to one hundredth of a meter, commonly used to measure small distances or lengths.
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