Coat color of dogs depend upon the action of at least two genes. At one locus a dominant epistatic inhibitor of coat color pigment (I_) prevents the expression of color alleles at another independently assorting locus, producing white coat color.  When the recessive condition exists in the inhibitor locus (ii), the alleles of the hypostatic locus may be expressed, iiB_ producing black and iibb producing brown.  When dihybrid white dogs are mated together, determine the: (a) the type of gene interaction   (b) the phenotypic proportions expected in the progeny   (c) the chance of choosing, from among the white progeny, a genotype that is homozygous at both loci

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.