BIO 201 CBT PRACTICE

1. The F2 generation of a cross of two pure breeding parents (P) with two contrasting characters (tall and short) and tall is dominant over short is :

2. In an experiment, the F1 generation of a cross between a brown cock and a white cock were all brown because the gene for the ___.

3. Males have haploid chromosomal constitution and females diploid in ____.

4. The following stages of cell division would not be affected by non disjunction except _____.

5. The following are assumptions of quantitative inheritance except _____.

6. Sex limited genes are otherwise called ___.

7. Aristotles theories during the early periods of development of Genetics implied that the fathers semen supply the substance while the mothers blood supply the form.

8. The following statements are true of genes except ____.

9. In a genetic experiment; AaBbCc x AaBbCc, how many genes are involved in this experiment?

10. ____ is a sex influenced trait in males.

11. Which of the following conditions is produced by Trisomy-21 in man?

12. Dispermy results in production of _____ asters in the zygote.

13. In Mendels laws of inheritance, F means __.

14. Who worked on reduction division?

15. The following are assumptions in quantitative inheritance except ____.

16. Most of the difficulties students experience in Genetics has to do with the fact that:

17. To facilitate the study of quantitative inheritance, ___ were propounded

18. Which of the following is an example of discontinuous variation?

19. _____ proposed the theory of germplas.

20. Which of the following is the sexual chromosomal constitution of females affected by Down's syndrome in man?

21. In Mendel's laws of inheritance, F means __.

22. The following are patterns of sex chromosome distribution except ____.

23. A homozygous genotype is ____.

24. Non disjunction is not the only cause of Downs syndrome.

25. In which of the following human sex abnormallies are those affected recognized as females but are poorly developed?

26. _____ embryos die early in development.

27. The importance of Genetics is in connection with ____.

28. Which of the following traits is / are known to be Y linked in man? I. a testis determining factor, II. Y - histocompatibility, III. hair on the ear rims of some men

29. The following are examples of sex ?? limited traits except _____.

30. The following are features of testicular feminization except _____.

31. Which of the following is a sex chromosomal aberation?

32. Sex reversal without chromosomal change possible in females of ____.

33. The probability of the simultaneous occurrence of two or more events is equal to ____ of their individual occurrences.

34. If a tall man (Tt) marries a short woman (tt) and they have four children. The offspring of these children will be _____.:

35. ____ found that somatic cells of female grasshopper contain 24 chromosomes while male cells contain 23 chromosomes

36. Mendel discovered that the F1 generation of a cross between a brown cock and a white cock were all brown because the gene for the :

37. The following are parallels between genetic and cytological facts except ___.

38. In a genetic cross; AaBbCc x AaBbCc. How many genetic fusions is possible?

39. Non disjunction is not the only cause of Down syndrome.

40. Genetics entail substantial psychological reasoning