A **test cross** is the cross of an F₁ hybrid (or unknown dominant) wi…

Question

A **test cross** is the cross of an F₁ hybrid (or unknown dominant) with:

Accepted Answer

B. Homozygous recessive parent

Test cross = hybrid × homozygous recessive (e.g. Tt × tt).
The progeny ratio reveals whether the dominant parent is TT (all tall offspring) or Tt (1:1 tall:dwarf), thereby disclosing the genotype.

Answer

Pure dominant parent

Answer

Another heterozygous individual

Answer

F₂ generation

A test cross is the cross of an F₁ hybrid (or unknown dominant) with:

Keep practising Unit 5C: Non-Mendelian Genetics & Population Transmission