Relier Pairs Mendel GeneticsVersion en ligne His research showed that traits are inherited as discrete units. He came up with two important laws in genetics. What do you know about his work to get your clue? par Deanna Squire Squire 1 The physical characteristic, or traits that is expressed (Tall, Short) 2 refers to the genetic makeup of a specific set of genes (TT, Tt, tt) 3 States that organisms inherit 2 copes of each gene, one from each parent and that during the formation of games the two copies of each gene separate. 4 Heterozygous genotype 5 Considered the father of Genetics 6 Allele that is expressed when two different alleles are present (T) 7 allele that is expressed only when two copies are present (t) 8 Homozygous genotype Law of Segregation Tt (2) Genotype Phenotype (7) Dominant TT (8) Recessive (3) Mendel (1)