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Question
Define the following term:
Dihybrid cross
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Solution
A cross between parents differing in two heritable traits is called a dihybrid cross. e.g., a cross of a pure, tall, round seeded plant with a dwarf, wrinkled-seeded plant.
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RELATED QUESTIONS
Explain the significance of a test cross.
Explain the statement of
Test cross is back cross but back cross is not necessarily a test cross.
Long answer type question.
Define test cross and explain its significance.
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?
Match List I with List II -
| List-I | List-II |
| A. Two or more alternative forms of a gene | I. Back cross |
| B. Cross of F1 progeny with homozygous recessive parent | II. Ploidy |
| C. Cross of F1 progeny with any of the parents | III. Allele |
| D. Number of chromosome sets in plant | IV. Test cross |
Choose the correct answer from the options given below:
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 ______.
In a test cross, which parent must always be used alongside the dominant phenotype individual?
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?
