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Asked Mar 14, 2019
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what is the true breeding means and what a test cross is?

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Expert Answer

Step 1

The true breeding means when the organisms produce offspring with the same phenotype as their own. According to this, the parents are homozygous for the given trait. The trait can be dominant or recessive. The test cross is an experiment done to determine the genetic makeup of any organisms.

Step 2

The true breeding is a kind of breeding in which the parents would produce the offspring with the same phenotype. In such cases, the genotype of the parents is homozygous. Example of such breeding is the body color of cattle. For many generations the color of the cattle is black. This implies the trait to be pure. In plants, if the flowers self-pollinate, then the resulting generation would have the same phenotype as the parents. For this, the parents must be dominant homozygo...

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