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An allele that expresses its phenotypic effect even when heterozygous with a recessive allele.
An allele whose phenotypic effect is not expressed in a heterozygote. It is only expressed when homozygous.
Process of sexual reproduction in which male and female reproductive cells join to form a new cell.
The term used describe organisms that produce offspring identical to themselves if allowed to self-pollinate (homozygous).
Principle of Segregation
In most sexually reproducing organisms, each adult has two copies of a gene--one from each parent. These genes are segregated from each other when gametes are formed.
Principle of Independent Assortment
Genes for different traits can segregate independently during formation of gametes.
Likelihood that a particular event will occur; used to predict outcomes of genetic crosses.
Term used to describe an organism that has two different alleles for a particular trait.
Father of genetics; scientist who followed the scientific method when designing genetic experiments.
Possible explanation for a set of observations or answer to a question; accepted or rejected, can not be proven; must be testable
Manipulated (Independent) Variable
Factor in an experiment that a scientist purposely changes to cause an effect; on x-axis
Constant (Control) Variables
All factors in an experiment that are kept the same and have a fixed value
The group that will not be affected by the experimental variable; is used as a standard of comparison in an experiment
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