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प्रश्न
Design a test-cross.
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उत्तर १
If the progenies produced by a test cross show 50% dominant trait and 50% recessive trait, then the unknown individual is heterozygous for a trait. On the other hand, if the progeny produced shows a dominant trait, then the unknown individual is homozygous for a trait.
उत्तर २
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संबंधित प्रश्न
What is a test cross?
Define the following term:
Dihybrid cross
An individual produced during a cross between two pure plants differing in two pairs of contrasting characters is always ______
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______.
A purple flowered pea plant is crossed with a white flowered pea plant. Among the progeny, there are equal number of purple and white flowered plants. The result indicates that it is ______.
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.
What is the primary purpose of performing a test cross in genetics?
When a test cross produces all offspring with the dominant phenotype, what can be concluded about the dominant parent's genotype?
What phenotypic ratio in test cross offspring indicates that the dominant parent is heterozygous (Tt)?
What is the expected genotypic ratio when an F₁ heterozygous individual (Tt) is back crossed with the homozygous dominant parent (TT)?
What is the primary practical application of test crosses in agriculture?
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)?
