Heredity Vocabulary Cards Flashcards
Heredity
The passing of genetic traits from parent to offspring.
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.
Genes
one set of instructions for an inherited trait.
Alleles
one of the alternative forms of a gene that governs a characteristic , as hair color.
Phenotype
an oragnisms appearance or other detectable characteristic.
Genotype
The entire genetic makeup of an organism; also the combination of genes for one or more specific traits.
Probability
The likelihood that a possible future event will occur in any given instance of the event.
Meiosis
A process in cell division during which the number of chromosomes decreases to half the original number by two divisions of the nucleus, which results in the production of sex cells.
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 several generations of a family.
DNA
The molecule inside cells that contains the genetic information.
Nucleotide
The basic building block of nuceli acid.
Mutations
The action or process of the mutating.
RNA
A molecule that is similar to the DNA.
