In the context of evolution, certain traits or alleles of genes segregating within a population may be subject to selection. Under selection, individuals with advantageous or "adaptive" traits tend to be more successful than their peers reproductively—meaning they contribute more offspring to the succeeding generation than others do. When these traits have a genetic basis, selection can increase the prevalence of those traits, because offspring will inherit those traits from their parents. When selection is intense and persistent, adaptive traits become universal to the population or species, which may then be said to have evolved. Scientists who do experimental genetics employ artificial selection experiments that permit the survival of organisms with user-defined phenotypes. Artificial selection is widely used in the field of microbial genetics, especially molecular cloning.

Whether or not selection takes place depends on the conditions in which the individuals of a species find themselves. Adults, juveniles, embryos, and even eggs and sperm may undergo selection. Factors fostering selection include limits on resources (nourishment, habitat space, mates) and the existence of threats (predators, disease, adverse weather). Biologists often refer to such factors as selective pressures.

Patrick Chukwuemeka Okogwu (born 7 November 1988), better known by his stage name Tinie Tempah, is an English rapper. He made his first mixtape in 2007; his first album, Disc-Overy, debuted at number one in October 2010 and was preceded by two number-one singles.

Patrick Chukwuemeka Okogwu, was born in London, England on 7 November 1988, and is of Ibusa, Delta State, Nigerian origin. He lived on the Aylesbury Estate in South East London until he was 12 with his parents and three younger siblings. He attended St. Paul's Catholic School in Abbey Wood, London SE2, (now known as St. Paul's Academy). He went on to study A Levels at St Francis Xavier Sixth Form College, SW12. Of his London upbringing, Tempah states: “London is one of the only places in the world where you can live in a council block and see a beautiful semi-detached house across the street. Growing up around that was inspirational, it kept me motivated".

In 2006, Tempah gained a great deal of airplay on British music TV channel, Channel AKA, for his song "Tears" He made his first mixtape in 2007 with 28 songs, freestyles and remixes, featuring Mz Bratt, Chipmunk and G-Unit.^{[citation needed]} His first album, Disc-Overy, debuted at number one in October 2010 and was preceded by the number-one singles "Pass Out" and "Written in the Stars" and the UK Top 5 hits "Frisky" and "Miami 2 Ibiza". In late 2007, he collaborated on a track ("Perfect GCD Hood Economics Room 147") with grime artist Ultra and producers/songwriters Agent X.

Allen Ezail Iverson (born June 7, 1975) is an American professional basketball player, playing both the point guard and shooting guard positions. Iverson attended Bethel High School and was a dual-sport athlete; he earned The Associated Press High School Player of the Year award in both football and basketball, and won the Division AAA Virginia State Championship in both sports. After high school, Iverson attended Georgetown University for two years, where he set the school record for career scoring average (22.9 points per game) and won Big East Defensive Player of the Year awards both years.

Following two successful years at Georgetown, Iverson declared eligibility for the 1996 NBA Draft, and was selected by the Philadelphia 76ers with the number one pick. He was named the NBA Rookie of the Year in the 1996–97 season. Iverson is an eleven-time NBA All-Star which includes winning the All-Star MVP award in 2001 and 2005.

Winning the NBA scoring title during the 1998–99, 2000–01, 2001–02 and 2004–05 seasons, Iverson was one of the most prolific scorers in NBA history, despite his small stature (listed at 6 feet, 0 inches). His regular season career scoring average of 26.7 points per game ranks sixth all-time, and his playoff career scoring average of 29.7 points per game is second only to Michael Jordan. Iverson was also the NBA Most Valuable Player of the 2000–01 season and led his team to the 2001 NBA Finals the same season. Iverson represented the United States at the 2004 Summer Olympics, winning the bronze medal. He also played for the Denver Nuggets, Detroit Pistons and the Memphis Grizzlies, before returning to the 76ers for part of the 2009–10 season.