the passing of physical characteristics from parents to offspring
heredity
each different form of a characteristic, such as a system height or seed color
trait
the scientific study of heredity
genetics
a new organism begins to form when egg and sperm join in this process
fertilization
is the offspring of many generations that have the same trait
purebred
the factors that control a trait
gene
the different forms of a gene
alleles
is one whose trait always shows up in the organism when the allele is present
dominate allele
is hidden whenever the dominate allele is present
recessive allele
organism has two different alleles for a trait
hybrid
a number that describes that an event will occur
probability
a chart that shows how many possible alleles that result from a genetic cross
punnet square
an animales physical appearance or visible traits
phenotype
an organism's genetic makeup or allele combination
genotype
an organism that has two identical alleles for a trait
homozygous
the alleles are neither dominant or recessive
codominace
the process by which the number of chromosomes is reduced by half to form sex cells
meiosis
copies the coded message from the DNA in the nucleus and carries the message to the ribosomes in the cytoplasm
messenger RNA