Science

A:

Genetic equilibrium is the stabilization of genetic mutation within a species. The concept comes from the Hardy-Weinberg principle, and it serves as the measurement for evolutionary change.

See Full Answer
    • What is the farthest star from Earth?

      Q: What is the farthest star from Earth?

      A: Scientists will never know the farthest star from Earth, as the star is so far away that its light has not, nor will ever, have enough time to reach Earth. Even the stars within the visible universe are far too numerous to count, but the farthest one that humans have ever detected is about 55 million light years away. This incredibly distant star is called SDSS J 122952.66 +112227.8.
      See Full Answer
      Filed Under:
    • What is Jupiter's atmosphere made up of?

      Q: What is Jupiter's atmosphere made up of?

      A: The atmosphere of Jupiter consists of 90 percent hydrogen gas and nearly 10 percent helium. However, its atmosphere has trace amounts of ammonia, sulfur and water vapor. Jupiter is a gas giant that is also the biggest planet in the solar system.
      See Full Answer
      Filed Under:
    • Is the sun bigger than the moon and Earth?

      Q: Is the sun bigger than the moon and Earth?

      A: The sun is bigger than both the moon and the Earth. The Earth is approximately 7,926 miles in diameter, while the sun is roughly 900,000 miles in diameter. The moon is smaller than both the sun and the Earth, with a diameter of 2,159.26 miles.
      See Full Answer
      Filed Under:
    • How do space craters get their names?

      Q: How do space craters get their names?

      A: The International Astronomical Union (IAU), an organization of astronomers, names the craters on planets and moons in the solar system by giving each planet a creative theme. For example, the moon’s craters are usually named for deceased explorers, scientists and scholars, while large craters on Venus are named for famous women in various professional fields.
      See Full Answer
      Filed Under:
    • What is a constellation?

      Q: What is a constellation?

      A: The general English definition of constellation is a group or configuration of objects, characteristics, ideas, feelings, etc, as in "a constellation of qualities." The noun constellation is used in astronomy, astrology and general English.
      See Full Answer
      Filed Under:
    • How would you describe a solar eclipse?

      Q: How would you describe a solar eclipse?

      A: A solar eclipse occurs when the moon moves directly between the Earth and the sun. The moon's shadow travels over the surface of the Earth and blocks out the light from the sun seen on Earth.
      See Full Answer
      Filed Under:
    • See More Astronomy Questions
    • What is an example of a saprophyte?

      Q: What is an example of a saprophyte?

      A: Some examples of saprophytes are the bacteria which subsist on human waste, the ink cap mushroom and non-photosynthetic plants, such as Indian pipe and gnome plant. Saprophyte is somewhat of an outdated name: fungi once termed saprophytes are now called saprobes, and plants once termed saprophytes are now called mycotrophic.
      See Full Answer
      Filed Under:
    • Where are chromosomes located?

      Q: Where are chromosomes located?

      A: Chromosomes can be found in the nucleus of every plant and animal cell; these combinations of DNA and protein are essential components of genetic information. DNA is a long chain of genetic information that would not be able to fit inside a cell without the structural assistance of chromosomes, and this information helps determine a plant or animal's individual traits, including physical characteristics and behavioral capabilities. The DNA that is contained in chromosomes is passed from parents down to offspring.
      See Full Answer
      Filed Under:
    • How many ants are there in the world?

      Q: How many ants are there in the world?

      A: Researchers Bert Holldobler and Edward O. Wilson wrote a book called "The Ants," in which they estimate that there are over 10 quadrillion ants on the planet. Scientists surmise that ants comprise from 15 to 25 percent of the earth's animal biomass. There are 12,762 known species of ants, and the estimated number of total ant species is more than 22,000.
      See Full Answer
      Filed Under:
    • What are the nonliving parts of an ecosystem called?

      Q: What are the nonliving parts of an ecosystem called?

      A: Nonliving parts of an ecosystem are called abiotic components or abiotic factors. These include parts of the ecosystem that are non-living but still affect it. Examples include water, soil, air, temperature and sunlight.
      See Full Answer
      Filed Under:
    • What is an acquired trait?

      Q: What is an acquired trait?

      A: An acquired trait is a physical characteristic of an organism that is not passed down to offspring genetically. It is not coded in the organism's DNA and is a product of the environment's influence on the organism.
      See Full Answer
      Filed Under:
    • How do sponges reproduce asexually?

      Q: How do sponges reproduce asexually?

      A: According to the University of Wisconsin La Crosse, sponges can reproduce asexually through external budding, gemmules (or internal budding) and the regeneration of broken pieces that develop into full-bodied sponges themselves. Sponges can also reproduce sexually.
      See Full Answer
      Filed Under:
    • See More Biology Questions
    • What is "H2O"?

      Q: What is "H2O"?

      A: H2O is the chemical formula for water. Each water molecule has two hydrogen atoms and one oxygen atom. Each hydrogen atom is attached to the oxygen atom with a polar covalent bond.
      See Full Answer
      Filed Under:
    • What is the most flammable substance in the world?

      Q: What is the most flammable substance in the world?

      A: The most flammable substance in the world is chlorine trifluoride, according to About.com. This substance is so flammable that it does not require an ignition source to combust.
      See Full Answer
      Filed Under:
    • What is the reaction between chalk and vinegar?

      Q: What is the reaction between chalk and vinegar?

      A: The reaction between chalk and vinegar is a neutralization reaction between calcium carbonate and acetic acid to produce water, carbon dioxide and calcium acetate. Carbon dioxide is a gas that causes the reaction to bubble.
      See Full Answer
      Filed Under:
    • What are the chemical properties of methane?

      Q: What are the chemical properties of methane?

      A: Methane is lighter than air and has a specific gravity of 0.554. Methane’s chemical formula is CH4. It is a colorless and odorless gas that is produced abundantly in nature.
      See Full Answer
      Filed Under:
    • Where does air come from?

      Q: Where does air come from?

      A: Oxygen is one of the primary components that allows air to be breathable to people and it began forming in the atmosphere approximately one billion years ago. Until the ozone layer formed, most life on the planet was restricted to the oceans.
      See Full Answer
      Filed Under:
    • What are some examples of petrochemicals?

      Q: What are some examples of petrochemicals?

      A: Petrochemicals are organic chemicals made from crude oil and natural gas for use in industrial processes. Examples of primary petrochemicals include methanol, ethylene, propylene, butadiene, benzene, toluene and xylene. Roughly five percent of the world's annual oil supply is utilized to make petrochemicals. These organic substances are used to make plastics, medicines, furniture, appliances, solar panels, PVC pipes, bulletproof vests, consumer electronics, wind turbines and automobile parts.
      See Full Answer
      Filed Under:
    • See More Chemistry Questions