testcross

A genetic cross between an organism with an unknown genotype for a specific trait and one that is homozygous recessive for that trait, used to determine the unknown genotype from the resulting offspring.

• 🇫🇷Croisement génétique entre un organisme dont le génotype pour un caractère donné est inconnu et un organisme homozygote pour l'allèle récessif de ce caractère, utilisé pour déterminer le génotype inconnu à partir de la descendance obtenue.

1. Genetic cross for genotype determination C1 formal scientific

   A cross between an organism with an unknown genotype for a specific trait and an organism that is homozygous recessive for that trait, used to determine the unknown genotype from the offspring's characteristics.

   • The biologist performed a testcross to determine if the pea plant was homozygous dominant or heterozygous.
   • By analyzing the offspring of a testcross, the geneticist could deduce the unknown parent's genotype.
   • A testcross is a fundamental tool in Mendelian genetics for identifying hidden recessive alleles.

   🇫🇷Croisement test

   Synonymes: backcrosstest-cross

• testcrosses plural form
• testcrosses' possessive plural form
• testcross's possessive singular form