Chapter 5 Flashcards
Dominant trait
The trait observed in the first generation when parents that have different traits are bred.
Recessive trait
A trait that reappears in the second generation after disappearing in the first generation when parents with different traits are bred.
Gene
One set of instruction for an inherited trait.
Allele
One of the alternative forms of a gene that governs a characteristic such as hair color.
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 of the event.
Homologous chromosomes
Chromosomes that have the same sequence of gene and the same structure.
Meiosis
A process in Cell division during which the number of chromosomes decreases to half the original number.
Sex chromosomes
One of the pair of chromosomes that determine the sex of an individual.
Pedigree
A diorama that shows the occurrence of a genetic trait in several generations of a family.
Heredity
The passing of genetic traits from parent to offspring.
