They are found in all three states of existence. Here are some other physical properties of halogens that make them a very unique family of elements. Appearance Appearance wise fluorine exists as a pale yellow gas that is poisonous in nature, while chlorine is similarly poisonous but exists as a pale green colored gas.alogens range from solid (I2) to liquid (Br2) to gaseous (F2 and Cl2) at room temperature. The chemical properties are more uniform. The halogens have very high electronegativities. Fluorine has the highest electronegativity of all elements.
An example of a phenotypic trait is hair color; there are underlying genes that control the hair color, which make up the genotype, but the actual hair color, the part we see, is the phenotype.
Coat Color DNA Testing options include: E Locus (DNA marker tested â R306ter). Most often used to determine the relationship of the Black (dominant) to Yellow (recessive). The ee genotype results in a yellow phenotype. (âYellowâ can represent a variety of lighter colors including apricots, reds, creams, and whites). Possible Genotypes: 1  EE â does not carry yellow. 2  Ee â yellow carrier.