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Ocular dominance. Ocular dominance, sometimes called eye preference or eyedness, [ 1] is the tendency to prefer visual input from one eye to the other. [ 2] It is somewhat analogous to the laterality of right- or left- handedness; however, the side of the dominant eye and the dominant hand do not always match. [ 3]
The Punnett square is a visual representation of Mendelian inheritance, a fundamental concept in genetics which is discovery of Gregor Mendel. [ 10] For multiple traits, using the "forked-line method" is typically much easier than the Punnett square. Phenotypes may be predicted with at least better-than-chance accuracy using a Punnett square ...
An epicanthic fold or epicanthus[ 6] is a skin fold of the upper eyelid that covers the inner corner (medial canthus) of the eye. [ 3] However, variation occurs in the nature of this feature and the possession of "partial epicanthic folds" or "slight epicanthic folds" is noted in the relevant literature. [ 7][ 8][ 9] Various factors influence ...
Reciprocal cross. In genetics, a reciprocal cross is a breeding experiment designed to test the role of parental sex on a given inheritance pattern. [1] All parent organisms must be true breeding to properly carry out such an experiment. In one cross, a male expressing the trait of interest will be crossed with a female not expressing the trait.
Pedigree of horse Shagya IX b. 1895. In the practice of selective breeding of animals, particularly in animal fancy and livestock, including horses, pedigree charts are used to track the ancestry of animals and assist in the planning of suitable breeding programs to enhance desirable traits. Breed registries are formed and are dedicated to the ...
f) Broad peripheral anterior synechiae right eye. [ 1] Axenfeld–Rieger syndrome is a rare autosomal dominant [ 2] disorder, which affects the development of the teeth, eyes, and abdominal region. [ 3] Axenfeld–Rieger syndrome is part of the so-called iridocorneal or anterior segment dysgenesis syndromes, [ 4] which were formerly known as ...
By performing a test cross, one can determine whether the individual is heterozygous or homozygous dominant. [ 1] In a test cross, the individual in question is bred with another individual that is homozygous for the recessive trait and the offspring of the test cross are examined. [ 2] Since the homozygous recessive individual can only pass on ...
A phenotypic trait is an obvious, observable, and measurable characteristic of an organism; it is the expression of genes in an observable way. An example of a phenotypic trait is a specific hair color or eye color. Underlying genes, that make up the genotype, determine the hair color, but the hair color observed is the phenotype.