testcross
/ˈtɛstkrɔs/
noun
- A genetic cross between an individual with a dominant trait and a homozygous recessive individual to determine the genotype of the dominant individual.
- In a testcross, the unknown parent is crossed with a recessive parent to reveal its genetic makeup.
- The biology students performed a testcross to find out if the pea plant was homozygous or heterozygous for flower color.
- The farmer used a testcross to determine whether his prize bull carried a recessive gene for a disorder.