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Biology Objective Questions and Answers for Competitive Examinations

41 The grouping of human chromosomes is based on
A Secondary constrictions alone
B Dot like satellites alone
C Banding pattern alone
D All the above

Answer: Option [C]
42 The gene which increases the frequency of mutation in other is referred to as
A Mutator gene
B Mutagene
C Hypostatic gene
D Complementary gene

Answer: Option [A]
43 Two allelic genes are located on
A The same chromosomes
B Two homologous chromosomes
C Two non-homologous chromosomes
D Any two chromosomes

Answer: Option [B]
44 The frequency of an allele in an isolated population may change due to
A gene flow
B mutation
C genetic drift
D natural selection

Answer: Option [C]
45 Number of autosmes in human sperm is
A 11
B 22
C 44
D 45

Answer: Option [B]


UPSC Biology Questions & Answers

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