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Question
What is a test cross?
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Solution
- 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.
RELATED QUESTIONS
Design a test-cross.
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.
Define the following term:
Dihybrid 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 ______
A cross between Fl hybrid and its parent is called______.
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 ______.
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.
