Paleness (pallor in Latin) is abnormal loss of color from normal skin or mucous membranes due to reduced amount of the blood in the skin arteries. Fair skin is genetically determined skin hue with low concentration of skin pigment (melanin) in the skin.
autosomal inheritance, a pattern of inheritance in which the transmission of traits depends on the presence or absence of certain alleles on the autosomes. The pattern may be dominant or recessive, and males and females are usually affected with equal frequency. The majority of hereditary disorders are the result of a defective gene on an autosome. Kinds of autosomal inheritance are autosomal-dominant inheritance and autosomal-recessive inheritance. See also inheritance.
But aa would make the a trait show up. As long as a pair of alleles has a dominant allele (A), the trait that the dominant allele represents would show up. Autosomal dominant is a trait that results when the allele combination is AA or Aa. Autosomal recessive is a trait that results when the combination is aa.For example, albinism is an autosomal recessive trait. That means if a person has two recessive alleles (aa), then that person WILL be an albino.ut aa would make the a trait show up. As long as a pair of alleles has a dominant allele (A), the trait that the dominant allele represents would show up. Autosomal dominant is a trait that results when the allele combination is AA or Aa. Autosomal recessive is a trait that results when the combination is aa.