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genetics

TermDefinition
heredity The passing of traits from parents to offspring.
trait A characteristic that an organism can pass on to its offspring through its genes.
genetics The scientific study of heredity.
fertilization The joining of sperm and an egg.
purebred The offspring of many generations that have the same traits.
gene The set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait.
alleles The different forms of a gene.
dominant allele An allele whose trait always shows up in the organism when the allele is present.
recessive allele An allele that is masked when a dominant allele is present.
hybrid An organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait.
probability A number that describes how likely it is that an event will occur.
punnet square A chart that shows all the possible combinations of alleles that can result from a genetic cross.
phenotype An organism's physical appearance, or visible traits.
genotype An organism's genetic makeup, or allele combinations.
homozygous Having two identical alleles for a trait.
heterozygous Having two different alleles for a trait.
codominance A condition in which nether of two allels of a gene is dominate or recessive.
meiosis The process that occurs in the formation of sex cells by which the number of chomosomes is reduced by half.
messenger RNA RNA that copies the coded message from DNA in the nucleus and carries the message into the cytoplasm.
transfer RNA RNA in the cytoplasm that carries an amino acid to the ribosome and adds it to the growing protein chain.
mutation A change in a gene or chromosome.
Created by: GoDawgs12
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