Advertisements
Advertisements
Question
Define the following term:
Dihybrid cross
Advertisements
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.
APPEARS IN
RELATED QUESTIONS
What is a test cross?
Design 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;
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 ______.
What phenotypic ratio in test cross offspring indicates that the dominant parent is heterozygous (Tt)?
In a back cross between F₁ (Tt) and the homozygous recessive parent (tt), what phenotypic ratio is observed?
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?
