There is no DNA in:
1. | an enucleated ovum | 2. | mature RBCs |
3. | a mature spermatozoan | 4. | hair root |
Point mutation involves:
1. insertion
2. change in single base pair
3. duplication
4. deletion
Which one of the following has maximum genetic diversity in India?
1. Teak
2. Mango
3. Wheat
4. Tea
In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of the human heart?
1. R-repolarisation of ventricles
2. S-start of systole
3. T-end of diastole
4. P-depolarisation of the atria
Study the pedigree chart given below:
What does it show?
1. | Inheritance of a sex-linked inborn error of metabolism |
2. | Inheritance of a condition like phenylketonuria as an autosomal recessive trait |
3. | The pedigree chart is wrong as this is not possible |
4. | Inheritance of a recessive sex-linked disease like haemophilia |
Middle lamella is mainly composed of:
1. hemicellulose
2. muramic acid
3. calcium pectate
4. phosphoglycerides
Somaclones are obtained by:
1. tissue culture
2. plant breeding
3. irradiation
4. genetic engineering
Which one of the following plants is monoecious?
1. | Marchantia | 2. | Pinus |
3. | Cycas | 4. | Papaya |
Which one of the following is the correct matching of three items and their grouping category?
Items | Group | |
1. | Malleus, incus cochlea | Ear ossicles |
2. | Ilium, ischium, pubis | Coxal bones of pelvic girdle |
3. | Actin, myosin rhodopsin | Muscle proteins |
4. | Cytosine, uracil thiamine | pyrimidines |
Plasmodesmata are:
1. | lignified cemented layers between cells |
2. | locomotory structures |
3. | membranes connecting the nucleus with plasmalemma |
4. | connections between adjacent cells |