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Question
Explain the significance of a test cross.
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Solution
- It helps to determine whether individuals exhibiting dominant character are genotypically homozygous or heterozygous.
- The purity of the parents can be determined.
- It helps to determine the genotype of the individual.
- It has wide application in plant breeding experiments.
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RELATED QUESTIONS
Explain the statement of
Test cross is back cross but back cross is not necessarily a test cross.
Define the following term:
Dihybrid cross
Read the following case and select the correct option.
ln a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring.
Therefore, it can be concluded that;
In order to achieve a dihybrid test cross, the F1 hybrid YyRr should be crossed will which one of the following genotypes?
A cross between Fl hybrid and its parent is called______.
Statement I - Back cross is the crossing of F1 - hybrid with one of the two parents from which they were derived.
Statement II - Test cross involves the crossing of F1 - hybrid with its homozygous recessive parent.
In light of above statements, choose the correct answer from the option given below.
When a test cross produces all offspring with the dominant phenotype, what can be concluded about the dominant parent's genotype?
What is the expected genotypic ratio when an F₁ heterozygous individual (Tt) is back crossed with the homozygous dominant parent (TT)?
Based on test cross principles, if a tall plant consistently produces dwarf offspring when crossed with homozygous dwarf plants, what is the tall plant's genotype?
How would you use a test cross to confirm that a plant with dominant morphology is truly homozygous dominant (TT)?
