Evolution (philosophy)
Evolution is change in heritable traits of biological populations over successive generations. Evolutionary processes give rise to diversity at every level of biological organisation, including the le...
Evolution (philosophy) - Wikipedia
How Big Genitals Can Lead to Extinction, According to Science
Having big genitals can spell evolutionary disaster, say paleobiologists
If there had been no asteroid collision 65 million years ago, would the human species even exist?
If there had been no asteroid collision 65 million years ago, would the human species even exist?
Vanishing: The Earth's 6th mass extinction
We're entering the Earth's sixth era of extinction -- and it's the first time humans are to blame.
The extinction crisis is far worse than you think
Frogs, coral, elephants -- all are on the brink. Three quarters of species could disappear. Why is this happening? CNN explores an unprecedented global crisis.
First Human Treated With CRISPR Gene-Edited Cells In China, Report Says
For the first time, a cancer patient is being treated with cells altered using a gene editing technique called CRISPR-Cas9.
Humans Inherited The Tendency For Violence, But Civilization Has Tamed It
As a species, humans seem to have inherited murderous traits via evolution and genetics, but civilization has tamed some of it out, a new study suggests. Scientists in Spain calculated the rate at whi...
Scientists Find Evidence for Alternate Theory of How Life Arose
A new study led by scientists at The Scripps Research Institute (TSRI) offers a twist on a popular theory for how life on Earth began about...
A Newly Made RNA Strand Bolsters Ideas About How Life On Earth Began
RNA molecule is able to synthesize other RNAs, a feat believed central to the origin of life
Calls vs. Balls: "Monkey Balls" Show Why Men Overcompensate
Howler monkeys are about the size of a small dog, weighing around seven kilos, yet they are among the loudest terrestrial animals on the planet, and can roar...
5 Gross And Amazing Ways Animals Deliver Sperm
One worm lives inside the female and ejaculates through the top of her head. In some deep-sea anglerfish species, like the needlebeard seadevil, the tiny male bites into the female, who is often 10 ti...
Scientists Are Finally Figuring Out Why You Only Get Mitochondrial DNA From Your Mum
Your relatives probably can’t stop talking about how much you look like your mum or your dad, but the truth is, while you might have gotten your dad’s eyes, you carry more of your mother’s genes than ...
Rosetta’s Comet Contains Ingredients For Life
Ingredients crucial for the origin of life on Earth, including the simple amino acid glycine and phosphorus, key components of DNA and cell membranes, have been discovered at Comet 67P/Churyumov-Geras...
Building Blocks of Life Found in Comet's Atmosphere
New research confirms the existence of the amino acid glycine, other organic molecules and the crucial element phosphorus just beyond the surface of Comet 67P.
Solar Superflares May Have Sparked Life by Warming Earth
Life on Earth may owe its existence to incredibly powerful storms that erupted on the sun long ago, a new study suggests.
Brother And Sister Inherit Disease That Will Stop Them Ever Sleeping Again
A brother and sister have inherited a disease that will stop them from ever sleeping again - and which will eventually kill them. Lachlan and Hayley Webb from Queensland, Australia, suffer from a r...
Scientists Claim They've Completed The First Successful Gene Therapy Against Human Ageing
The CEO of Bioviva USA Inc , Elizabeth Parrish, claims to be the first human in world history to have successfully reversed the effects of natural ageing - thanks to experimental gene therapy provided...
History of evolutionary thought
Evolutionary thought, the conception that species change over time, has roots in antiquity, in the ideas of the ancient Greeks, Romans, and Chinese as well as in medieval Islamic science. With the beg...
History of evolutionary thought - Wikipedia
Introduction to genetics
Genetics is the study of genes — what they are and how they work. Genes are units inside a cell that control how living organisms inherit features from their ancestors; for example, children usually ...
Introduction to genetics - Wikipedia
Genetics
Genetics is the study of genes, heredity, and genetic variation in living organisms. It is generally considered a field of biology, but it intersects frequently with many of the life sciences and is s...
Heredity
Heredity is the passing of phenotypic traits from parents to their offspring, either through asexual reproduction or sexual reproduction. This is the process by which an offspring cell or organism acq...
Heredity - Wikipedia
Norms of reaction
In ecology and genetics, a reaction norm, also called a norm of reaction, describes the pattern of phenotypic expression of a single genotype across a range of environments. One use of reaction norms...
Norms of reaction - Wikipedia
Genetic diversity
Genetic diversity, the level of biodiversity, refers to the total number of genetic characteristics in the genetic makeup of a species. It is distinguished from genetic variability, which describes th...
Genetic diversity - Wikipedia
Population genetics
Population genetics is the study of the distributions and changes of allele frequency in a population, as the population is subject to the four main evolutionary processes: natural selection, genetic ...
Mutation
In biology, a mutation is a permanent change of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements. Mutations result from damage to DNA whic...
Sexual reproduction
Sexual reproduction is a biological process that creates a new organism by combining the genetic material of two organisms in a process that starts with meiosis, a specialized type of cell division. S...
Sexual reproduction - Wikipedia
Genetic recombination
Genetic recombination is the production of offspring with combinations of traits that differ from those found in either parent. In eukaryotes, genetic recombination during meiosis can lead, through se...
Genetic recombination - Wikipedia
Evolution of sexual reproduction
The evolution of sexual reproduction describes how sexually reproducing eukaryotic organisms (animals, plants and fungi) evolved from a common ancestor that was a single celled eukaryotic species. Man...
Gene flow
In population genetics, gene flow (also known as gene migration) is the transfer of alleles or genes from one population to another.Migration into or out of a population may be responsible for a marke...
Gene flow - Wikipedia
Natural selection
Natural selection is the gradual process by which heritable biological traits become either more or less common in a population as a function of the effect of inherited traits on the differential repr...
Natural selection - Wikipedia
Fitness (biology)
Fitness (often denoted in population genetics models) is a central idea in evolutionary theory. It can be defined either with respect to a genotype or to a phenotype in a given environment. In either...
Fitness (biology) - Wikipedia