Genetics Vocabulary Review genetics the study of heredity
Genetics Vocabulary Review
genetics the study of heredity
DNA The directions or blueprints of life; made up of subunits called nucleotides
Chromosomes A structure in that carries genes that determine the sex of offspring as well as other traits; it is made up of DNA and protein
genes instructions for an inherited trait; located on chromosomes
Allele The different forms of a gene.
dominant Kind of trait that appears more often. Identified with a capital letter
recessive The trait that seems to reappear in the second generation; usually indicated by a lower case letter
heterozygous The combination of two different alleles for an inherited trait
homozygous The combination of two of the same alleles for an inherited trait
phenotype An organism’s inherited physical appearance
genotype The combination of alleles GG, Gg, or gg
probability that mathematical chance that an event will occur Ratio: 3: 1 or percent: 75% or fraction 1/4
Punnett Square A tool used to visualize all the possible combinations of alleles from parents
heredity the passing of traits from parents to offspring
mutation Changes in the DNA
Selective breeding When breeders mate organisms with desirable characteristics
Genetic Engineering Manipulating the genes within an organism.
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