Unit 4 · In Vitro Fertilization (IVF)Heredity and Mendelism
Words of This Topic
- Heredity: passing of parents' characters to their young ones
- Gene: the unit in a chromosome that carries one characteristic
- Genetics: the study of genes, heredity and variation
- Contrasting characters: two opposite forms of one character, like tall and dwarf
- Dominant: the character that shows in F1
- Recessive: the character that stays hidden in F1
- Pure: carrying two genes of the same kind, like TT or tt
- Hybrid: carrying one gene of each kind, like Tt
- F1, F2, F3: the first, second and third filial generations
- Gamete: a sex cell that carries only one gene of each pair
- Phenotype: what an organism looks like
- Genotype: the genes an organism carries
- Monohybrid cross: a cross following one pair of characters
- Dihybrid cross: a cross following two pairs of characters