Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?

1. High concentration of Progesterone

2. Low concentration of LH

3. Low concentration of FSH

4. High concentration of Estrogen

Match the follwing columns and select the correct option .

       Column-l           Column-ll 

(a) Placenta            (i)   Androgens  

(b) Zona pellucida    (ii) Human chroinic 

(c) Bulbo-urethral          Gonadotropin 

      glands               (iii)  Layer of the ovum 

(d) Leydig cells          (iv) Lubrication of the Penis 

      a         b         c      d

(1) (i)      (iv)      (ii)    (iii) 

(2) (iii)      (ii)    (iv)     (i) 

(3) (ii)     (iii)      (iv)    (i) 

(4) (iv)     (iii)     (i)      (ii) 

Select the option including all sexually transmitted diseases.

1. Gonorrhoea, Malaria, Genital herpes

2. AIDS, Malaria, Filaria

3. Cancer, AIDS, Syphilis

4. Gonorrhoea, Syphilis, Genital herpes

In Which of the following techniques, the embryos are transferred to assist those females who cannot conceive?

1. GIFT and ZIFT

2. ICSI and ZIFT

3. GIFT and ICSI

4. ZIFT and IUT

Experimental verification of the chromosomal theory of inheritance was done by:

(1) Sutton

(2) Boveri

(3) Morgan

(4) Mendel

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

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 I^A and I^B are present together, they express same type of sugar.

3. Allele 'i' does not produce any sugar.

4. The gene (I) has three alleles. 

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 

Name the enzyme that facilitates opening of DNA helix during transcription.

1. DNA helicase

2. DNA polymerase

3. RNA polymerase

4. DNA ligase

If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is $6.6\times {10}^9$ bp, then the length of the DNA is approximate: