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Q. No.Assuming independent assortment, the ratio of progeny with the genotypes AaBb : Aabb : aaBb : aabb from a dihybrid cross AabB X AaBb will respectively be:
| 1. | 4 : 3 : 2 : 1 | 2. | 4 : 4 : 2 : 1 |
| 3. | 4 : 2 : 2 : 1 | 4. | 4 : 2 : 1 : 1 |
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In a dihybrid cross between two pea plants with round and yellow seeds [heterozygous at both loci], the yellow and green color will segregate in a ratio:
| 1. | 1 : 1 | 2. | 3 : 1 |
| 3. | 1 : 1 : 1 : 1 | 4. | 9 : 3 : 3 : 1 |
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In a dihybrid cross, AaBb x AaBb, the fraction of the offspring that will be homozygous for both traits is:
| 1. | 1/16 | 2. | 1/8 |
| 3. | 3/16 | 4. | ¼ |
| 1. | 3/16 | 2. | 6/16 |
| 3. | 9/16 | 4. | 1/16 |
| 1. | 1 : 1 | 2. | 3 : 1 |
| 3. | 1 : 1 : 1 : 1 | 4. | 9 : 1 |
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Q. No.
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