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 |
Chromosomal theory of inheritance was proposed by:
1. Sutton and Boveri
2. Bateson and Punnet
3. T. H. Morgan
4. Watson and Crick
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 |
The production of gametes by the parents the formation of zygotes, the F1 and F2 plants can be understood using
1. | Pie diagram | 2. | A pyramid diagram |
3. | Punnett square | 4. | Wenn diagram |
In which genetic condition, each cell in the affected person, has three sex chromosomes XXY?
1. Thalassemia
2. Klinefelter's Syndrome
3. Phenylketonuria
4. Turner's Syndrome
In a marriage between a male with blood group A and a female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of the parents?
1. IA i (Male) ; IB IB (Female)
2. IA IA (Male) ; IB IB (Female)
3. IA IA (Male) ; IB i (Female)
4. IA i (Male) ; IB i(Female)