Z chromosome
A sex chromosome in certain animals, such as chickens, turkeys, and moths. In humans, males are XY and females XX, but in animals with a Z chromosome, males are ZZ and females are WZ.
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A gene that regulates the expression of other genes.
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A condition with multiple malformations at birth and mental retardation due to isochromosome 12p mosaicism (an abnormal chromosome #12 in some cells).
- Palm
The grasping side of the hand; the flexor surface of the hand. In contrast to the back of the hand, the extensor surface of the hand. From the Latin “palma” for the outstretched palm of the hand. The palm tree is so named from the resemblance of the shape of its frond to the palm […]
- Palmar
Pertaining to the palm (the grasping side) of the hand. The ancient Romans used the word “palma” for the outstretched palm of the hand. By comparison, the term “volar” applies to both the palm and sole. It comes from word “vola” which the Romans used for “the palm of the hand and the sole of […]