Chapter 5 - Heredity Flashcards
Dominant Trait
The trait observed in the first generation when parents that have different traits are bred
Heredity
Passing of traits from parent to offspring
Recessive Trait
A trait that reappears in the second generation after disappearing in the first generation
Gene
A set of instructions for an inherited trait
Allele
One of the alternative forms of a gene that governs a characteristic
Phenotype
An organism’s appearance or other detectable characteristic
Genotype
The entire genetic makeup of an organism
Probability
The likelihood that a possible future event will occur in any given instance
Homologous chromosomes
Chromosomes that have the same sequence and structure
Meiosis
The amount of chromosomes decreased to half the original number by two divisions
Sex chromosomes
One of the pair of chromosomes that determine the sex of an individual
Pedigree
A diagram that shows the occurrence of a genetic trait in the generations of a family