- 1(current)
Q. No.How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE?
| 1. | 4 | 2. | 8 |
| 3. | 16 | 4. | 32 |
The inheritance of colour in wheat Kernel shown below is explained by:
| 1. | Polygenic inheritance | 2. | Pleiotropy |
| 3. | Epistatic interaction | 4. | Multiple allelism |
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Match the terms in Column I with their description in Column II and choose the correct option.
| Column I | Column II | ||
| A. | Dominance | 1. | Many govern a single character |
| B. | Codominance | 2. | In a heterozygous organism, only one allele expresses itself |
| C. | Pleiotropy | 3. | In a heterozygous organism, both alleles express themselves fully |
| D. | Polygenic inheritance | 4. | A single gene influences many characters |
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 4 | 1 | 2 | 3 |
| 3. | 4 | 3 | 1 | 2 |
| 4. | 2 | 1 | 4 | 3 |
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Human skin colour is a polygenic trait. What proportion of progeny in a mating between a male with the genotype AaBbCC and a female with the genotype AaBbCc will have the genotype AABBcc?
| 1. | 0 | 2. | 6/64 |
| 3. | 15/64 | 4. | 20/64 |
1. Main mode of non-allelic genes interaction in corresponding gene series is addition of mainly small particular allele contributions.
2. The effects of allelic substitution at each of the segregating genes are usually relatively small and interchangeable which results that identical phenotype may be displayed by a great variety of genotypes.
3. The phenotypic expression of the polygenic characters is undergoing considerable modification by environmental influence.
4. Polygenic characters show a discontinuous rather than continuous distribution.
- 1(current)
Q. No.
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