Men also develop facial hair, while women develop wider hips and breasts (Dixson, 2009). ... Human beings are unlike any other primate in the fact that female's breasts enlarge during puberty, prior to their first pregnancy (Geary, 2002). This is a sexually dimorphic trait, and occurs due to a stimulation of oestrogen in females during puberty, which triggers an increase in fat storage in the breast (Dixson, 2009). Men have a preference for women with average to large breasts, so it is likely that the human uniqueness of growing breasts prior to pregnancy, has been shaped by male prefere...

• Word Count: 1391
• Approx Pages: 6
• Has Bibliography
• Grade Level: Undergraduate

Reproduction Sex and Genetics Life began about 3.6 billion years ago. ... Because of this humans link almost everything to sex, or symbolizing of sex. ... Although, even with hair, humans have differences between the sexes. ... But the differences between humans and primates are neverending, such as the breast and penis", they are much larger. ... Sex and Gender Humans usually never have trouble telling the sex of a person simply by looking at them. ...

• Word Count: 1558
• Approx Pages: 6
• Grade Level: High School

An increasing number of researchers, scientists and practitioners are questioning the use of animals in research on ethical, moral, socio-political and scientific grounds. Use of animal research data to affect change in their patients is rarely used by clinical psychologists. This is certainly a pub...

• Word Count: 2170
• Approx Pages: 9
• Has Bibliography
• Grade Level: Undergraduate