- 1(current)
Q. No.What is F2 phenotypic ratio in a dihybrid cross?
| 1. | 1 : 1 | 2. | 3 : 1 |
| 3. | 9 : 3 : 3 : 1 | 4. | 1 : 1 : 1: 1 |
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‘When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters’. This is the statement of:
1. Law of Dominance
2. Law of segregation
3. Law of Independent Assortment
4. Law of Linkage
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Assuming independent assortment, the percent of progeny with genotype AABb from a cross AaBb X AaBb is expected to be:
| 1. | 7.5 | 2. | 15 |
| 3. | 12.5 | 4. | 30 |
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The number of types of gametes produced by a plant with the genotype AaBbCCDd will be:
| 1. | 2 | 2. | 4 |
| 3. | 8 | 4. | 16 |
Two genes ‘A’ and ‘B’ are completely linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with a homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?
| 1. | 1:1:1:1 | 2. | 9:3:3:1 |
| 3. | 3 : 1 | 4. | 1 : 1 |
If individuals of genotype AaBbCc are intercrossed, how many different phenotypes can appear in their offspring?
| 1. | 3 | 2. | 6 |
| 3. | 8 | 4. | 9 |
| Statement I: | X will be parental types (98.7%) and recombinant types (1.3%); Y will be parental types (62.8%) and recombinant types (37.2%) |
| Statement II: | The strength of linkage is inversely proportional to the distance between the genes located on the same chromosome. |
1. Only Statement I
2. Only Statement II
3. Both Statement I and Statement II
4. Neither Statement I nor Statement II
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- 1(current)
Q. No.
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