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प्रश्न
What is a test cross?
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उत्तर
- The cross between the F1 hybrid and the recessive parent is called the test cross.
- The crossing of an F11 progeny with a double (homozygous) recessive parental progeny is done in order to determine whether the progeny is homozygous or heterozygous for a character under consideration. This is called a test cross.
संबंधित प्रश्न
Design 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.
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;
An individual produced during a cross between two pure plants differing in two pairs of contrasting characters is always ______
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:
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.
In a test cross, which parent must always be used alongside the dominant phenotype individual?
In a back cross between F₁ (Tt) and the homozygous recessive parent (tt), what phenotypic ratio is observed?
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?
