/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Biology Class 12 This Quiz Contains a Set of 10 Questions. Passing cut-off is 60%. To Start the Quiz... Click on the Start Button. All the Best. 1 / 10 Assertion (A): PCR is a powerful technique to identify genetic disorders. Reason (R): PCR can detect mutations in low amounts of DNA. Both A and R are true and R is the correct explanation of A. Both A and R are true and R is not the correct explanation of A. A is true but R is false. A is false but R is true. 2 / 10 Interferons are most effective in making non-infected cells resistant against the spread of which of the following diseases in humans? ascariasis ringworm amoebiasis AIDS 3 / 10 How many types of gametes would be produced if the genotype of a parent is AaBB? 1 2 3 4 4 / 10 Assertion (A): Functional ADA cDNA genes must be inserted in the lymphocytes at the early embryonic stage. Reason (R): Cells in the embryonic stage are mortal, differentiated and easy to manipulate. Both A and R are true and R is the correct explanation of A. Both A and R are true and R is not the correct explanation of A. A is true but R is false. A is False but R is true. 5 / 10 The DNA fingerprinting pattern of child is Exactly similar to that of both the parents 100% similar to the father’s DNA print 100% similar to the mother’s DNA print 50% bands similar to father and rest similar to mother 6 / 10 An infertile couple was advised to undergo In vitro fertilization by the doctor. Out of the options given below, select the correct stage for transfer to the fallopian tube for successful results? Zygote only Zygote or early embryo upto 8 blastomeres Embryos with more than 8 blastomeres Blastocyst Stage 7 / 10 Short stretches of DNA used to identify complementary sequence in a sample are called probes markers VNTRs primers 8 / 10 Assertion (A): Ribosomal RNA is synthesized in the nucleus of the cell. Reason (R): It is translated with the enzyme RNA polymerase III. Both A and R are true and R is the correct explanation of A. Both A and R are true and R is not the correct explanation of A. A is true but R is false. A is false but R is true. 9 / 10 Assertion (A): Smoking can raise blood pressure and increase heart rate. Reason (R): Nicotine stimulates adrenal glands to release adrenaline and nor-adrenaline into the blood circulation, both of which raise blood pressure and increase heart rate. Both A and R are true and R is the correct explanation of A. Both A and R are true and R is not the correct explanation of A. A is true but R is false. A is false but R is true. 10 / 10 Which of the following are the correct reasons for Rheumatoid arthritis? i.) Lymphocytes become more active ii.) Body attacks self cells iii.) More antibodies are produced in the body iv.) The ability to differentiate pathogens or foreign molecules from self cells is lost Choose the correct answer from the options given below: i and ii iii and iv i and iii ii and iv Your score is 0% Restart quiz
