Relier Pairs HeredityVersion en ligne Life Science par Melodie Gonzalez [STUDENT] 1 Genes that are expressed when a heterozygous genotype is present. 2 The study of heredity, or how certain features pass parents to their offspring 3 The characteristics we get genetically from our parents and our relatives before them. 4 Determined by whether or not a dominant trait is present. 5 Genes that are expressed when homozygous genotypes are present. 6 Because a person has more genes than expressed, there are many different possible combinations of genes their offspring can have. 7 Used to determine the probability of outcomes of offspring. 8 A person with both a dominant and recessive alleles. 9 The trait that is expressed. 10 The process by which scientists modify the genome of an organism. 11 Any of the forms of a specific gene that can be present on the same location of a chromosome. Gene Expression Punnet Square Recessive Traits Genetics Variation Of Traits Genetic Engineering Heredity Alleles Phenotype Heterozygous Dominant Traits