The passing of physical characteristics from parents to offspring
Each different form of a characteristic, such as stem height or seed color
Scientific study of heredity
When a new organism begins to form when egg and sperm cells join together
The offspring of many generations that have the same form of a trait
Factors that control a trait (contains 2 alleles)
The different forms of a gene
One whose trait always shows up in the organism when the allele is present
Hidden whenever the dominant allele is present
An organism that has 2 different alleles for a trait
A number that describes how likely it is that an event will occur
Chart that shows all the possible combinations of alleles that can result from a genetic cross
An organism's physical appearance or visible traits
An organism's genetic makeup, or allele combinations
An organism that has 2 identical alleles for a trait (purebred)
An organism that has 2 different alleles for a trait (hybrid)
When both alleles for a gene are expressed equally
When one allele is only partially dominant
When more than one gene affects a trait
Trait someone is born with
Trait that is caused by physical action (environment)
Not born with it
Process by which the number of chromosomes is reduced by half to form sex cells- sperm and eggs
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