Term | Definition |
heredity | passing of traits from parents to offspring |
tarit | characteristic that an organism can pass on to its offspring through its genes |
genetics | scientific study of heredity |
fertilization | process in which an egg cell and a sperm cell join to form a new organism |
purebred | the offspring of many generations that have the same traits |
gene | set of information that controls a trait, a segment of DNA on a chromosome that codes for specific trait |
allele | different forms of gene |
dominant gene | a gene whose trait always shows up in the organism when allele is present |
recessive trait | gene that is masked when a dominant allele is present |
hybrid | organism that has two different allele for trait, and organism that is heterozygous for a particular trait |
probability | number that describes how likely it is that an event will occur |
punnett square | chart that shows all The possible combinations of alleles that can result from a genetic crosss |
phenotype | organism physical appearance, or visible traits |
genotype | organism genetic makeup, or allele combinations |
homozygous dominant | having two dominant alleles for a trait |
homozygous recessive | having two recessive alleles for a trait |
heterozygous | having two different alleles for a trait |
DNA | deoxyribonucleic acid |
codominance | condition in which neither of two alleles of a gene is dominant or recessive |