Heredity and evolution Worksheet-7

Heredity and evolution Worksheet-7

41. The group of simplest organisms is:

A. Thallophyta                              B. Protista

C. Porifera                                     D. Fungi

42. Genetic drift can occur because of:

A. Accidental phenomena B. Variation

C. Mutation                                   D. All of these

43. The number of chromosomes in gametes of human beings is:

A. 23                   B. 46                   C. 23 pairs         D. 46 pairs

44. How many daughter cells are produced at the end of single meiotic cell division cycles?

A. 4                     B. 8                     C. 16                    D. 64

45. Loss of body weight is an example of:

A. Inherited trait                          B. Acquired trait

C. Somatic Trait                           D. None of these

46. Sex chromosomes are also known as:

A. Allosomes

B. Autosomes

C. Homologous Chromosomes

D. Homozygous chromosomes

47. The blood group of a daughter produced by a couple having blood group A with genotype I^AI^A and I^AI^O will be

A. A

B. O

C. I

D. Data incomplete to predict the blood group

48. Which of the following is a dominant allele for the trait blood group?

A. A                     B. B                     C. A and B         D. A, B and O

49. Which of the following organisms can change their sex post birth?

A. Lizards          B. Turtles           C. Crocodiles    D. Snails

50. The process by which RNA is converted to protein is known as:

A. Replication                               B. Transcription

C. Translation                               D. Recombination

Answer Key:

41. B
42. D
43. A
44. A
45. B
46. A
47. D
48. C
49. D
50. C