BIO 1140 Lecture Notes - Lecture 4: Gregor Mendel, Heredity, Polygenism
Document Summary
Because of the several shapes the genes can have: from the picture, each gene occupies a specific locus on a given chromosome, the dna sequence of the locus can show variants alleles ( ex. In case of heterozygous in locus ( both allele are different) Recessive allele: will determine the appearance of the organism, will have no notable effects, ex. This is can explain by the law of uniformity as the allele of purple pigment is dominate and the allele of white pigment is recessive. In the case above the child will have free ear lobe because it the dominant allele. Law of segregation: when 2 allele from a heritable character segregate during the formation of the gamete and up in different gamete. (through miosis: ex. Test crossing to determine the genotype weather it homozygous or heterozygous. Every pair of allele separates independently from the other pairs when gametes are formed.
