Which of the following viruses is not transferred through the semen of an infected male?
| 1. | Hepatitis-B virus | 2. | Human immunodeficiency virus |
| 3. | Chikungunya virus | 4. | Ebola virus |
Which of the following cells during gametogenesis is normally diploid?
2. Spermatid
3. Spermatogonia
4. Secondary polar body
Hysterectomy is the surgical removal of:
| 1. | uterus | 2. | prostate gland |
| 3. | vas deference | 4. | mammary glands |
Which of the following is not a sexually transmitted disease?
1. Syphilis
2. Acquired Immuno Deficiency Syndrome (AIDS)
3. Trichomoniasis
4. Encephalitis
An abnormal human baby with 'XXX' sex chromosomes was born due to:
1. formation of abnormal ova in the mother
2. fusion of two ova and one sperm
3. fusion of two sperms and one ovum
4. formation of abnormal sperms in the father
Alleles are:
1. different phenotype
2. true breeding homozygotes
3. different molecular forms of a gene
4. heterozygotes
A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offspring?
2. A, B and AB
3. A, B, AB and O
4. Only O
Gene regulation governing lactose operon of E. coli that involves the lac I gene products is:
| 1. | positive and inducible because it can be induced by lactose. |
| 2. | negative and inducible because repress or protein prevents transcription. |
| 3. | negative and repressible because repress or protein prevents transcription. |
| 4. | feedback inhibition because excess of β galactosidase can switch off transcription. |
In sea urchin DNA, which is double-stranded 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are:
2. G/17%, A/16.5%, T/32.5%
3. G/17%, A/33%, T/33%
4. G/8.5%, A/50%, T/24.5%
Which of the following had the smallest brain capacity?
1. Homo erectus
2. Homo sapiens
3. Homo neanderthalensis
4. Homo habilis
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