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Practice Test - 1

Welcome to your Genetic evaloution

1. 
Which component of H-W equation denotes genotype frequency of homozygous dominant?

2. 
Which law states two alleles segregate independently?

3. 
Law of segregation occurs during:

4. 
Most acceptable theory of origin of life:

5. 
Which process produces variation essential for evolution?

6. 
Turner syndrome has karyotype:

7. 
When a harmful recessive allele increases due to random sampling, it is:

8. 
Which structure demonstrates vestigiality?

9. 
Which species concept uses reproductive isolation?

10. 
Sickle cell anemia is caused by:

11. 
A cross gives 1:1 ratio in offspring. The F1 parent must be:

12. 
Genetic drift is most significant in:

13. 
Which shows maternal inheritance?

14. 
If two genes have 20% recombination, they are:

15. 
Crossing over occurs during:

16. 
Which evidence strongly supports organic evolution?

17. 
Darwin failed to explain:

18. 
The ratio 9:3:3:1 indicates:

19. 
Which best describes Darwin’s natural selection?

20. 
Bat’s wing and bird’s wing show:

21. 
Founder effect is caused by:

22. 
If p = 0.6, q = 0.4 in H-W law, frequency of pq genotype is:

23. 
In incomplete dominance, F1 phenotype is:

24. 
Evidence for evolution from comparative embryology shows:

25. 
Which trait shows codominance?

26. 
“Use and disuse” was proposed by:

27. 
Barr body is found in:

28. 
Homologous organs indicate:

29. 
Which stage in evolution is linked to appearance of ozone layer?

30. 
Which mechanism restricts gene exchange between populations?

31. 
Human height shows continuous variation because it is:

32. 
Sex-linked recessive traits appear more frequently in:

33. 
A test cross involves crossing F1 with:

34. 
Hardy-Weinberg equilibrium requires:

35. 
An example of multiple alleles is:

36. 
When allele frequency changes due to migration it is:

37. 
Who proposed mutation theory?

38. 
Genotype of AB blood group is:

39. 
Which process forms new species?

40. 
Which shows deviation from Mendelian ratio?

41. 
Which evolutionary force introduces new alleles?

42. 
A person with O blood group can receive blood from:

43. 
Recombination frequency close to 50% means genes are:

44. 
Which mutation changes a codon to a stop codon?

45. 
Trisomy 21 is caused by: