Class 12BiologyPrinciples of Inheritance and VariationMix Examples- Principles of Inheritance and Variation
MediumGenes that are similar in phenotypic effect when present separately,but together interact to produce a different trait and the ratio is $9:7$ in the $F_2$ generation. What are such genes known as?
- ASupplementary genes
- BComplementary genes
- CHypostatic genes
- DEpistatic genes
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$A$ person may have one gene for normal haemoglobin and one gene for sickle cell haemoglobin. This heterozygous condition is called:
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View SolutionThe $F_2$ dihybrid ratio $9 : 3 : 4$ is explained on the basis of
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View SolutionMatch List-$I$ with List-$II$:
List-$I$ List-$II$ $(A)$ Two or more alternative forms of a gene $(I)$ Back cross $(B)$ Cross of $F_1$ progeny with homozygous recessive parent $(II)$ Ploidy $(C)$ Cross of $F_1$ 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:
| List-$I$ | List-$II$ |
|---|---|
| $(A)$ Two or more alternative forms of a gene | $(I)$ Back cross |
| $(B)$ Cross of $F_1$ progeny with homozygous recessive parent | $(II)$ Ploidy |
| $(C)$ Cross of $F_1$ 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:
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View SolutionIf a modified allele produces a non-functional enzyme or no enzyme,then the phenotype will not be affected in which of the following cases?
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View SolutionHybrid vigour is due to
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