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Genetics Vocabulary

Terms in this set (9)

Recessive Gene
An organism MUST have both alleles for this trait in order for it to be expressed
Heterozygous
A combination of alleles for the same trait in the organism that are different from one another (Bb)
Allele
Different versions of the same gene, all organisms will have two.
Phenotype
An organism's observable traits, expressed characteristics.
Dominant Gene
When present this gene will be expressed in the phenotype.
Genotype
The genetic makeup of an organism, written using two letters. (BB, Bb, or bb)
Independent Assortment
Different pairs of alleles are passed to offspring independently of each other.
Homozygous
A combination of alleles for the same trait in the organism that are the same as each other (BB or bb)
Gene
A specific portion of the DNA, at a specific location on a chromosome.
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