Q. No.The number of contrasting characters studied by Mendel for his experiments was:
1.
14
2.
4
3.
2
4.
7
The best example of pleiotropy is:
| 1. | Skin color | 2. | Phenylketonuria |
| 3. | Colour Blindness | 4. | ABO Blood group |
Chromosomal theory of inheritance was proposed by:
1. Sutton and Boveri
2. Bateson and Punnet
3. T. H. Morgan
4. Watson and Crick
In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?
| 1. | 25% | 2. | 100% |
| 3. | 50% | 4. | 75% |
How many true-breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
| 1. | 2 | 2. | 14 |
| 3. | 6 | 4. | 4 |
Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.
| 1. | A person will have only two of the 3 alleles. |
| 2. | When IA and IB are present together, they express same type of sugar. |
| 3. | Allele 'i' does not produce any sugar. |
| 4. | The gene (I) has three alleles. |
Select the correct match:
| 1. | Phenylketonuria | Autosomal dominant trait |
| 2. | Sickle cell anemia | Autosomal recessive trait chromosome - 11 |
| 3. | Thalassemia | X linked |
| 4. | Haemophilia | Y linked |
Experimental verification of the chromosomal theory of inheritance was done by:
| 1. | Sutton | 2. | Boveri |
| 3. | Morgan | 4. | Mendel |
Given below are two statements:
| Statement I: | Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance |
| Statement II: | Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower colour, pod shape and colour, flower position and stem height |
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
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