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Terms in this set (21)
Characteristic that is inherited; can be either dominant or recessive.
The different forms of a gene.
If an organism is heterozygous it is the trait that is expressed. Only need 1 copy of dominant allele to show dominant trait.
If an organism is heterozygous it is the trait that is "hidden". Need 2 copies of recessive allele to show recessive trait.
The genetic makeup, or set of alleles, of an organism. (Ex: PP, Pp or pp)
The observable physical traits of an organism, which are determined by its genetic makeup.
A diagram used to predict the probability of how traits could be passed from parent to offspring
Having two identical alleles for a given gene; homozygous dominant (RR), homozygous recessive (rr)
Having two different alleles for a given gene.
A cross between two organisms in which two traits are being considered.
see heterozygous, An organism that has two different alleles for a trait
see homozygous, An organism that always produces offspring with the same form of a trait as the parent
The study of heredity
The passing of traits from parents to offspring
Female Sex Chromosomes
Male Sex Chromosomes
Sex Linked Traits
Traits controlled by genes located on sex chromosomes. Common examples are colorblindness and hemophilia.
Three or more forms of a gene that code for a single trait.
The likelihood that a particular event will occur
A change in a gene or chromosome
A segment of DNA on a chromosome that codes for a specific trait
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