Psychology Glossary. Genotype. The total set of genes contained within an organisms cells. Organisms contain some genes that are expressed (you can consider the expressed to mean that the gene is active or being used) and some that are not. Regardless, all the genes an organism has are considered the genotype.
Mars' closest approach to the Earth is called opposition, and occurs roughly every 780 days.
How long does it take to go to Mars? A: The distance to Mars varies between the planet's closest approach to Earth at 35 million miles and the farthest distance at 140 million miles. In theory, it would take the fastest spacecraft ever built 39 days to reach Mars at its closest distance and 289 days at its most distant. Continue Reading.