Term | Definition |
heredity | Is the passing of physical characteristics form parents to offspring. |
trait | Is a different from of a characteristic. |
genetics | Is the scientific study of heredity. |
fertilization | Is when a new organism begins to form when egg and sperm join. |
purebred | Is a organism that is the offspring of many generations that have th same trait. |
gene | Is the word scientists use to name the factors that control a trait. |
allele | Are different forms of a gene. |
dominant allele | Is one whose trait always shows up in the organism when the allele is present. |
recessive allele | Is hidden whenever the dominant allele is present. |
hybrid | Is a organism that has two different alleles for a trait. |
probabilty | Is the use of principles to predict the results of a particular event. |
Punnett square | Is a chart that shows all the possible combinations of alleles that can result from a genetic cross. |
phenotype | Is the physical or visible traits. |
genotype | Is the genetic makeup or allele combinations. |
homozygous | Is when an organism has two identical alleles for a trait. |
heterozygous | Is when an organism has two different alleles for a trait. |
codominance | Is the inheritance pattern, alleles are neither dominant or recessive. Both alleles are expressed in the offspring. |
Meiosis | Is the process by which the number of chromosomes is reduced by half to form sex cells―sperm and egg. |
messenger RNA | It copies the coded message from DNA in the nucleus, and carries the message to the ribosome in the cytoplasm. |
transfer RNA | It carries amino acids to the ribosome and adds them to the growing protein. |