Hormones & Behavior By Randy J. Nelson. The Ohio State University. The goal of this module is to introduce you to the topic of hormones and behavior. This field of study is also called behavioral endocrinology, which is the scientific study of the interaction between hormones and behavior.
Reproduction: Reproduction, process by which organisms replicate themselves. In a general sense reproduction is one of the most important concepts in biology: it means making a copy, a likeness, and thereby providing for the continued existence of species.
Biology4s.com! This tutorial introduces cell structure. Other sections include plants, systems, invertebrates, vertebrates, and microorganisms.
acquired trait: A phenotypic characteristic, acquired during growth and development, that is not genetically based and therefore cannot be passed on to the next generation (for example, the large muscles of a weightlifter).
The sex organs, which scientists call the genitalia or genitals, are the parts of the body that allow sexual reproduction (the making of ) to take place. They are also for urination (peeing), to remove waste products from the body.
Sep 03, 2017 · Sex: News and Features. From an evolutionary and biological perspective, s are driven to have sex in order to procreate. But there is a lot more to sexual relations between s.
Your information will *never* be shared or sold to a 3rd party. Promise. “We usually have a tough time keeping female teachers here,” my boss informed me on my first day of work as an English teacher in Tokyo. “They usually don’t last more than six months.” I looked up from studying the
Organisms of many species are specialized into male and female varieties, each known as a sex. Sexual reproduction involves the combining and mixing of genetic traits: specialized cells known as gametes combine to form …
A person’s sex is either male or female.For example: John’s sex is male.Jane’s sex is female.This difference is sometimes called gender.. In humans, the sex of a person depends on what sex chromosomes that person got from his or her parents.
The egg cell, or ovum (plural ova), is the female reproductive cell in oogamous organisms. The egg cell is typically not capable of active movement, and it is much larger (visible to the naked eye) than the motile sperm cells.