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genetics

science

TermDefinition
heredity the passing of physical characteristics from parent to offspring.
trait each different form of a characteristic, such as stem height or seed color.
genetics the scientific study of heredity.
fertilization a new organism begins to form when egg and sperm join.
purebred an offspring of many generations that have the same trait.
gene the factors that control the trait.
alleles the different forms of a gene.
dominant alleles the one trait that always shows up in the organism when the allele is present.
recessive alleles the one trait that is hidden whenever the dominant allele is present.
hybrid an organism that has two different alleles for a trait.
probability to predict the results of a particular event.
punnet square a chart that shows all the possible combinations of alleles that can result from a genetic cross.
phenotype the physical traits or visible traits.
genotype the genetic makeup or allele combination.
homozygous an organism that has two identical alleles for a trait.
heterozygous an organism that has two different alleles for a trait.
codominanace alleles that have an inheritance pattern.
meiosis the process which the number of chromosomes is reduced by half to form sex cells.
messenger RNA copies the coded message from the DNA in the nucleus and carries the message to the ribosome in the cytoplasm.
transfer RNA carries amino acids to the ribosome and adds them to the growing protein.
mutation the change in a gene or chromosome.
Created by: sammy.mason
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