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Q. No.Mendel worked with seven characteristics of pea plants include all the following except:
1. pod shape and color
2. seed shape and color
3. flower position and color
4. girth of plant and shade of green in leaves
1. pod shape and color
2. seed shape and color
3. flower position and color
4. girth of plant and shade of green in leaves
Subtopic: Dominance Deviation from Mendel: 1 | Dominance Deviation from Mendel: 2 |
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Incomplete dominance is present in:
1. Snapdragon flower
2. Dog flower
3. Antirrhinum flower
4. All of the above
Subtopic: Dominance Deviation from Mendel: 1 |
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Genotypic ratio of 1:2:1 is obtained in a cross between:
1. AA X AA
2. Aa X Aa
3. Aa X aa
4. aa X aa
Subtopic: Dominance Deviation from Mendel: 1 |
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Mother and father of a person with ‘O’ blood group have ‘A’ and ‘B’ blood group, respectively. What would be the genotype of both mother and father?
| 1. | Mother is homozygous for ‘A’ blood group and father is heterozygous for ‘B’ |
| 2. | Mother is heterozygous for ‘A’ blood group and father is homozygous for ‘B’ |
| 3. | Both mother and father are heterozygous for ‘A’ and ‘B’ blood group, respectively |
| 4. | Both mother and father are homozygous for ‘A’ and ‘B’ blood group, respectively |
Subtopic: Dominance Deviation from Mendel: 1 | Dominance Deviation from Mendel: 2 |
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In case of starch synthesis in pea seeds [controlled by B gene], BB homozygotes produce large and round starch grains; bb homozygotes produce smaller and wrinkled starch grains and Heterozygotes produce round seeds of intermediate size. What can be inferred from this observation?
| 1. | The gene B mutates at a faster rate. |
| 2. | The gene B is easily influenced by the environment |
| 3. | Dominance is not an autonomous feature of a gene or the product that it has information for |
| 4. | Some genes do not follow the law of segregation |
Subtopic: Dominance Deviation from Mendel: 1 |
82%
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| Assertion (A): | ABO blood grouping has three alleles but humans have any two at a time. |
| Reason (R): | Humans are diploid organisms. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Dominance Deviation from Mendel: 1 |
81%
Level 1: 80%+
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Consider the following two statements:
In cases of incomplete dominance, the
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
In cases of incomplete dominance, the
| A: | F2 phenotypic ratio and genotypic ratio are the same. |
| B: | F1 progeny resembles neither of the parents. |
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
Subtopic: Dominance Deviation from Mendel: 1 |
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