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HeredityKP1516

Vocabulary important to the 7th grade study of genetics

TermDefinition
Dominant Trait A trait that will always be expressed in the phenotype
Chromosome Structure passed from parent to offspring
Alleles Different forms of the same gene
Genotype The set of genes carried by an organism
Hybrid Another term for heterozygous
Homozygous An organism with two of the same inherited alleles
Mutation A random change in an organism's DNA
Genetics The study of how traits are inherited
Heterozygous An organism with two alleles that are different
Phenotype The physical expression of a gene
Inherited Traits Characteristics that are passed from parent to offspring
Punnett Square Tool used to help make predictions about inheritance
Recessive Trait A trait that will only be expressed if two copies are present
Purebred Another name for homozygous
Genotype Examples include HH, Hh, hh
Phenotype Examples include brown eyes, widow's peak
Homozygous Dominant An example is BB
Homozygous Recessive An example is bb
Heterozygous An example is Bb
Purebred Examples are BB and bb
Hybrid Examples are Bb
Gene Units of inheritance located on chromosomes
DNA molecule of inheritance located in the nucleus of cells
Alleles Units of inheritance that compose genes
Acquired Traits Examples include the ability to learn, dyed purple hair, pierced ears
Incomplete dominance A pattern of inheritance where the two inherited alleles blend to form the phenotype for organisms inheriting the heterozygous genotype.
Co- dominance A pattern of inheritance where the two inherited alleles for a trait both show up.
Incomplete dominance An example would be red flowers and white flowers producing pink flowers
Co- dominance An example would be black chickens and white chickens mating to produce offspring that are speckled both black and white.
Created by: phillipsk1516