Do you think these sisters look alike?
Click on image for full size
Courtesy of Corel
You Have Your Parents’ Genes!
Aunt Maggie says you have your father's eyes.
Grandma says you have your mother's smile.
Could you actually have the traits from these other people? If you are genetically
related to them then yes, you could. Half of
are from your mother and half are from your father. But you might look more
like one of them than the other. Why is that?
Tucked within chromosomes in
each of the trillions of cells in
your body are genes that you inherited from your parents. Your have two versions
of each type of gene. One comes from your mother and the other comes from your
father. Both genes of a pair deal with the same trait, but they might have different
instructions. For instance, one gene for eye color might say blue while the
other one says brown.
One of those genes wins out and its instructions are carried out. It's
called the dominant gene. The other one is still there but
your body doesn't listen to its instructions. It's called a recessive
Last modified February 29, 2008 by Lisa Gardiner.
You might also be interested in:
Do you look a bit like your brothers or sisters? Do you look a bit like your parents? You may look alike because, unless you were adopted, you and the other members of your family have genes in common....more
Jupiter's atmospheric environment is one of powerful winds, going 250 miles per hour, and temperatures from -270 degrees to +32 degrees (freezing temperature). These winds make it hard for life forms to...more
In July, 1996 a team of scientists said that they had discovered possible fossils of bacteria in a meteorite named ALH84001 that came from Mars. It was found in Antarctica in 1984 after having landed there...more
Saturn's atmospheric environment is one of powerful winds, going 250 miles per hour, and temperatures from -270 degrees to +80 degrees. With winds like these, it is hard to have peace and quiet. The region...more
The air of Titan is a lot like the Earth's, except that it is very cold, from -330 degrees to -290 degrees! Like the Earth, there is a lot of Nitrogen and other complex molecules. There also may be an...more
Organisms that are able to "make their own food" are called autotrophs, meaning "self-feeders". Some examples of autotrophs are plants and algae (shown in the picture). Both plants and algae use photosynthesis...more
In the warm early ocean, large molecules came together into a form called *coacervates*. Molecules such as these will form coacervates in the same way that beads of vinegar in oil come together. These...more