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Define and design a test-cross....

Define and design a test-cross.

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The crossing of an `F_(1)` hybrid with its recessive parent is called test cross
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Define dihybrid test cross. Write its ratio.

Identify the incorrect statements from the below (I) Incomplete linkage 1:1:1:1 ratio is not obtained in test cross. (II) Synaptonemal complex prevents crossing over in Drosophila. (III) Crossing over is the reason for incomplete linkage. (IV) The horizontal cut will not create recombinants according to Robin Holliday.

Which of the following is a test cross ?

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NEW JOYTHI PUBLICATION-PRINCIPLES OF INHERITANCE AND VARIATION -PREVIOUS YEAR COMPETITIVE EXAM QUESTIONS
  1. Define and design a test-cross.

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  2. Epistatic effect in which the dihybrid cross AaBb * AaBb resulting in ...

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  3. Mendel's law of independent assortment can be demonstrated by

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  4. If Mendel had studied the 7 traits using a plant with 12 chromosomes i...

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  5. How many types of genetically different gametes will be produced by he...

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  6. When a plant of F1 generation is crossed with a homozygous dominant pa...

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  7. The ability of a gene to have many effects is called

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  8. The back Cross of F1 hybrid with the recessive parent is called

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  9. Skin colour inheritance in man is

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  10. The blood group is called universal donor.

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  11. The ratio of 1:1:1:1 is obtained from a cross between the parents .

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  12. A cross between F1 hybrid and recessive parent (Tt x tt) gives a ratio

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  13. Pleiotropic gene .

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  14. The process that involves inter-genic suppression or the masking effec...

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  15. Two sister chromatids are attached with the

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  16. Genes are arranged linearly in a chromosome was concluded by the study...

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  17. Crossing over occurs between .

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  18. Chemical composition of chromosome is

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  19. Which pair is a chromosomal aberration?

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  20. Chromosomal aberrations refer to

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  21. Linkage reduces the frequency of

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