Heredity is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents. Through heredity, variations between individuals can accumulate and cause species to evolve by natural selection. The study of heredity in biology is genetics.
Trait may refer to:
- Phenotypic trait in biology, which involve genes and characteristics of organisms
- Trait (computer programming), a model for structuring object-oriented programs (a template class in the C++ programming language)
- Trait theory in psychology
5 haredity examples
The Eye of Providence (or the all-seeing eye of God) is a symbol, having its origin in Christian iconography, showing an eye often surrounded by rays of light or a glory and usually enclosed by a triangle. It represents the eye of God watching over humanity (the concept of divine providence). In the modern era, a notable depiction of the eye is the reverse of the Great Seal of the United States, which appears on the United States one-dollar bill.
brown hair? 2.dimples?
Dimples are small indentations that can be found on your skin. They can occur on different places of the body, including the cheeks, chin, and lower back.
Cheek dimples can be found on the sides of the mouth. You can have a dimple on both sides of your mouth or on just one side.
You’ve probably noticed that some people have cheek dimples and others don’t. That’s because cheek dimples are formed by differences in the muscles and skin of the face.
They’re often believed to be inherited in a genetically dominant way, although there’s some debate about this.
So how many people have dimples? While the prevalence of dimples may vary by population, one study of over 2,300 people found that about 37 percent of participants had cheek dimples. Continue reading to discover more.
Brown hair is the second most common human hair color, after black hair. It varies from light brown to almost black hair. It is characterized by higher levels of the dark pigment eumelanin and lower levels of the pale pigment pheomelanin. People with brown hair are often referred to as brunette, which in French is the feminine form of brunet, the diminutive of brun (brown, brown-haired or dark-haired).
Brown hair is common among populations in the Western world, especially among those from Central Europe, Southeastern Europe, Eastern Europe, Southern Europe, Southern Cone, the United States, and also some populations in the Greater Middle East where it transitions smoothly into black hair. Additionally, brown hair is common among Australian Aborigines and Melanesians.
The human earlobe (lobulus auriculae) is composed of tough areolar and adipose connective tissues, lacking the firmness and elasticity of the rest of the auricle (the external structure of the ear). In some cases the lower lobe is connected to the side of the face. Since the earlobe does not contain cartilage it has a large blood supply and may help to warm the ears and maintain balance. However, earlobes are not generally considered to have any major biological function. The earlobe contains many nerve endings, and for some people is an erogenous zone.
The zoologist Desmond Morris in his book The Naked Ape (1967) conjectured that the lobes developed as an additional erogenous zone to facilitate the extended sexuality necessary in the evolution of human monogamous pair bonding