Match the following vocabulary words. 1. first filial generation; the first generation from a given cross gamete 2. second filial generation genotype 3. a reproductive cell produced by the male or female parent f1 generation 4. a portion of dna which codes a specific hereditary trait gene 5. the genes present in an organism heterozygous 6. refers to a pair of genes for a specific trait in an organism which are different f2 generation