1. The traits controlled by gene located on X- chromosomes are called
2. The percentage of crossing over will be more if
3. Twenty two pairs of similar human chromosomes are called
4. A haemophilic man marries a normal homozygous women. What is the probability that their son will be homophilic.
5. An exception of mendel's law is
6. An individual with genotype Aa Bb Cc will produce
7. The ability of a gene to have many effects is called.
8. 9:7 ratio is the result of
9. The genotype of blood group A is
10. Which of the following is an example of multiple alleles.
11. Allele pairs separate during gamete formation and the paired condition is restored by the random fusion of gametes during fertilization is the
12. When tall red plant is crossed with a dwarf white plant, all the plants of F1 generation are found to be tall red. Which of the following ratio will be available when a test cross is made.
13. What is not true of Euglena
14. In a random mating populations in equilibrium which of the following brings about a change in gene frequency.
15. Ancestors of mammals.
16. Which of the following set are vestigial structures in man?
17. Which of the following scales are similar to mammalian teeth.
18. Jacobson's organ is concerned with
19. Lining layer of fallopian tubes, bronchi and bronchioles consists of
20. Which is not the property of yellow fibres
21. Which one has abudent white fiberes
22. In frog oviduct is formed by
23. Unique feature of Mammalian body is the presence of
24. Besides bats, echolocation also occurs in
25. A four chambered heart is not found
26. Presence of gills in tadpole of Frog indicates that
27. Which one is a cat fish
28. A characteristic of achinodermata is
29. Torsion occurs in the visceral mass of
30. Beetle larva is
31. In which group of arthropoda, the body is divisible into head , thorax and abdomen -
32. Which ones do not occur in Earthworm-
33. Find out the correct match
34. Which one is an excretory organ.
35. Which is wrongly matched
36. Nektons are
37. Potato and sweet potato have edible parts which are
38. Flippers of seal are modified
39. Age of fossils was previously determined by radioactive elements. More precise recent method when has led to revision of evolutionary period is
40. Sequence of substances appearing during the origin of life would have been
41. Coacervates were experimentally produced by
42. A factor against achieving maximum population growth is
43. Active immunity is produced
44. Breathing movements are controlled by
45. Which of the following shens a trimorphic colony
46. Which of the following is the fastest enzyme
47. B cells produce antibodies in response to instruction received from
48. Aeromegaly is due to
49. Histamine is secreted by
50. The minamata disease is caused by