1. | Autosomal recessive | 2. | Autosomal dominant |
3. | Sex-linked recessive | 4. | Sex-linked dominant |
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1. | The former is a quantitative problem of synthesising too few globin molecules while the latter is a qualitative problem of synthesising an incorrectly functioning globin. |
2. | The former is a qualitative problem of synthesising too few globin molecules while the latter is a quantitative problem of synthesising an incorrectly functioning globin. |
3. | Both disorders are qualitative problems of synthesising too few globin molecules. |
4. | Both disorders are quantitative problems of synthesising too few globin molecules. |
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1. | Autosomal recessive | 2. | Autosomal dominant |
3. | Sex-linked recessive | 4. | Sex-linked dominant |
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1. | 6/64 | 2. | 15/64 |
3. | 20/64 | 4. | 1/64 |
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A gene is said to be dominant if:
1. | It expresses its effect only in the homozygous stage |
2. | It expresses only in heterozygous condition |
3. | It expresses both in homozygous and heterozygous conditions |
4. | It is never expressed in any condition |
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If Mendel might have studied 7 pairs of characters in a plant with 12 chromosomes instead of 14 then:
1. | He could not discover an independent assortment |
2. | He might have discovered linkage |
3. | He might have discovered crossing over |
4. | He might have not observed dominance |
A trait displays continuous phenotypic variation and is spread across a gradient. Usually, the inheritance of this trait can be described as:
1. dominant-recessive inheritance
2. multiple-allele inheritance
3. polygenic inheritance
4. sex-linked inheritance
Which of the following is a recessive trait in Pisum sativum?
1. | Yellow pod color | 2. | Axial flower position |
3. | Inflated pod shape | 4. | Violet flower color |
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Gynecomastia is an important clinical feature seen in individuals with:
1. | Klinefelter's syndrome | 2. | Turner’s syndrome |
3. | Oculocutaneous albinism | 4. | Down’s syndrome |
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A human female who is not color blind but whose father was color blind marries a normal male. What proportion of their male progeny will have red-green color blindness?
1. | 75% | 2. | 50% |
3. | 25% | 4. | 0% |