facial

Trisomy

...ed with mental and physical retardation, skull and facial abnormalities, defects in all organ systems, and poor muscle tone. Mean survival is 2 to 4 months. Full article >>> trisomy A condition where a cell has an extra chromosome . trophoblast The outer layer of cells of a bl...

Survival

...roduces mental and physical retardation, skull and facial abnormalities, and defects in all organ systems. Full article >>> The phrase " survival of the fittest " is often used synonymously with natural selection . The phrase is both incomplete and misleading. Full article >>...

Lumbar

...lso useful in the setting of trauma for evaluating facial and skull fractures. Full article >>> Mice that are homozygous for mutant HoxA10, C10, and D10 genes fail to form a lumbar and sacrum region in their vertebral column ("backbone"). Instead these vertebrae develop ribs like the th...

Digit

...roduces mental and physical retardation, skull and facial abnormalities, and defects in all organ systems. It is also associated with a cleft lip, a large, triangular nose, and extra digit s. Full article >>>...

Altruism

... nurturing, cooperation, altruism , and even some facial expression s. Genes are evolution ary glue, binding all of life in a single history that dates back some 3. Full article >>> This is called reciprocal altruism . A good example of this is blood sharing in vampire bats. In these bats...