Matching Pairs Mendel GeneticsOnline version 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? by Deanna Squire Squire 1 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. 2 The physical characteristic, or traits that is expressed (Tall, Short) 3 Heterozygous genotype 4 allele that is expressed only when two copies are present (t) 5 Homozygous genotype 6 Allele that is expressed when two different alleles are present (T) 7 Considered the father of Genetics 8 refers to the genetic makeup of a specific set of genes (TT, Tt, tt) Law of Segregation Genotype Recessive (3) Dominant Tt (2) TT (8) Mendel (1) Phenotype (7)