A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million years was due to their reproductive methods. Early animals reproduced by ...

The organs of a body are a spatial division of labour, one created by different genes being turned on or off in different cells. The same process serves to give individual lives a division of labour ...

Scientists used modified egg and stem cells to create female mice with two mothers. These fatherless mice grew up to have babies of their own (through more typical means of conception). Le-Yun Wang / ...

Activity 1 – Tap and find Activity 2 – Flowering plant quiz Activity 3 – Steps of flowering reproduction Activity 4 – Label the sexual organs Unlike animals, plants don’t need a male and a female to ...

Evolutionary theory predicts that reproduction entails costs that detract from somatic maintenance, accelerating biological aging. Despite support from studies in human and non-human animals, ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Eric's career includes extensive work in both public and corporate accounting with ...

Women exhibit greater morbidity than men despite higher life expectancy. An evolutionary life history framework predicts that energy invested in reproduction trades-off against investments in ...

Sex is not without its costs. Wouldn’t it be easier if you could just create a clone of yourself? Tamara Álvarez/Flickr, CC BY-NC-ND Imagine how easy life would be if you could produce offspring ...

Getting the job done. A female Asian water dragon (Physignathus cocincinus) produced a daughter (left) without the assistance of a male. Skip Brown/Smithsonian’s National Zoo An Asian water dragon ...

In a recent and historic breakthrough, scientists managed to reproduce rats without the need for male sperm, an important milestone that opens the question about the future of genetics and the ...