The dominant allele is expressed and the recessive allele is masked. This is an example of complete dominance. In heterozygous relationships where neither allele is dominant but both are completely expressed, the alleles are considered to be co-dominant. Co-dominance is exemplified in AB blood type inheritance.
swale (plural swales) 1  A low tract of moist or marshy land. 2  A long narrow and shallow trough between ridges on a beach, running parallel to the coastline. 3  A shallow troughlike depression that's created to carry water during rainstorms or snow melts; a drainage ditch.
Tickling is the act of touching a part of a body in a way that causes involuntary twitching movements or laughter. The word tickle evolved from the Middle English tikelen, perhaps frequentative of ticken, to touch lightly. The idiom tickled pink means to be pleased or delighted. In 1897, psychologists G. Stanley Hall and Arthur Allin described a tickle as two different types of phenomena. One type is caused by very light movement across the skin. This type of tickle, called a knismesis, gene