RosefanyFloriTrini RosefanyFloriTrini
  • 22-10-2016
  • Biology
contestada

clarify why test crosses are used in selective breeding.

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emmarobert
emmarobert emmarobert
  • 22-10-2016
A test cross can be used to determine the genotype of the parent (whether it is homozygous or heterozygous for a specific trait).  
AA x aa = all Aa offspring, dominant phenotype. 

Aa x aa = 1/2 Aa dominant and 1/2 aa recessive


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