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Biology Chapter No.8 Variations and Genetics 2nd Year Online MCQs TEST 2

Biology Chapter No. 8 Variations & Genetics 2nd Year Online MCQs TEST No.2

Biology MCQs 2nd Year Chapter No. 8 Variations & Genetics, FSc, Grade 12th, Second Year Multiple Choice Questions, Medical College ( MDCAT ) , ECAT & University Admission Entry Test Exams Online Preparation, Chapter Wise Questions Answers Quiz Notes in Pdf Download, All Old Board Papers included, All Queries reply within 24 Hours. Click here to Contact us for any Query/Question regarding Exams.

Biology
Variations and Genetics
Chapter No. 8
Second Year
Multiple Choice Questions
Test No.2 (MCQ’s)
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.








Book Name :  Biology
Chapter No. 08
Chapter Name : VARIATIONS and Genetics
Total MCQ from Text Book :  150
Book Version  :
2022

Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 12th ( F.Sc. Intermediate)
Total Marks : 150
Total Time :  150 minutes






5

GRADE 12 - BIOLOGY CHAPTER NO.8 VARIATIONS & GENETICS - TEST No. 2

GRADE 12 - BIOLOGY CHAPTER NO.8 VARIATIONS & GENETICS - TEST No. 2

1 / 150

All the genes present on a homologous pair of chromosome are linked to each other in the form of a :

2 / 150

When a single gene affects two or more traits or when a single gene has multiple phenotypic effect, the phenomenon is called:

3 / 150

Genes that affect growth rate in humans also influence:

4 / 150

The individuals called universal recipients have:

5 / 150

Green colour blindness is called:

6 / 150

An individual with a heterozygous genotype is a :

7 / 150

White eye gene in Drosophila also affects the shape of:

8 / 150

A chromosomes carries its linked genes en bloc in the form of a:

9 / 150

X and Y chromosomes are called sex-chromosomes because these have genes for determination of:

10 / 150

In cats, melanocyte failure causes both phenotypes, i.e.,

11 / 150

The form of appearance of a trait is called

12 / 150

In 1925 Bernstein explained the genetic basis of:

13 / 150

Partners of a gene pair are called:

14 / 150

T cells of immune system attack pancreas and destroy insulin producing:

15 / 150

The anaemic foetus starts to release many immature erythroblasts into his blood stream in:

16 / 150

Any group of sexually interbreeding organisms of the same species that exist together in both time and space is:

17 / 150

In humans, presence of 'SRY' gene on Y chromosome is essential for triggering the development of

18 / 150

The relationship between alleles of the same gene occupying the same locus is:

19 / 150

When the phenotype of the heterozygote is intermediate between phenotypes of the two homozygotes, it is called:

20 / 150

Test cross is a mating in which an individual showing a dominant phenotype is crossed with an individual showing its:

21 / 150

The male grasshopper has:

22 / 150

Some genes like bobbed gene in Drosophila are present.cn:

23 / 150

The gene for blue opsin is present on autosome:

24 / 150

ABO blood group system was discovered by:

25 / 150

The interaction between different genes occupying different loci is:

26 / 150

Some species like Ginkgo are:

27 / 150

The gene for eye colour in Drosophila is located on:

28 / 150

Exchange of chromosome segments logically means exchange of DNA, i.e.

29 / 150

SRY gene on Y chromosome of man determines:

30 / 150

The genes for red and green opsins are on:

31 / 150

Maternal - foetal (Erythroblastosis foetalis) incompatibility results when an Rh- woman, married to an Rh+ man conceives a child who is

32 / 150

Landsteiner and Levine discovered MN blood types in man on the basis of specific antigens present on:

33 / 150

Linked genes can be separated by:

34 / 150

SRY is the male determining gene which is located at the tip of short arm of:

35 / 150

The phenomenon of staying together of all the genes of a chromosome is called:

36 / 150

The number of linkage groups in man is:

37 / 150

Chances for a son or daughter in human birth are:

38 / 150

Mendel called the offspring of first parents as:

39 / 150

Genes for colour blindness, haemophilia, gout and hypophosphatemic rickets form one linkage group on human:

40 / 150

All the gene / alleles found in a breeding population at a given time are collectively called the:

41 / 150

Tritanopia is:

42 / 150

Pattern baldness is a:

43 / 150

Genes for sickle - cell anaemia and albinism make a linkage group on human chromosome:

44 / 150

The serum of O blood type contains:

45 / 150

Bilirum damages brain cells and turn skin and whites of the eye yellow. This condition is:

46 / 150

XXY individual produced through non disjunctional gametes in humans is a sterile male called:

47 / 150

The proportion of recombinant types between two gene pairs as compared to the sum of all combination is:

48 / 150

Human skin colour is also a quantitative trait which is controlled by:

49 / 150

The insulin gene is located on short arm of chromosome:

50 / 150

Linked genes do not obey Menders law of independent assortment, because these cannot assort independently during:

51 / 150

XO Turner's syndrome in humans produced through non- disjunction is sterile:

52 / 150

The total genetic information encoded in the total genes in a breeding population existing at a given time is:

53 / 150

An O recipient can only be given transfusion from a donor:

54 / 150

Diabetes mellitus type II is:

55 / 150

Different alleles of a gene that are both expressed in a heterozygous condition are called:

56 / 150

Secretors have dominant secretor gene "Se" on chromosome:

57 / 150

Drosophila males are :

58 / 150

ABO system has four different phenotypes which are distinct from each other on the basis of specific antigens on the surface of :

59 / 150

The homologous pairs of chromosomes in pea is:

60 / 150

Morgan raised cultures of Drosophila flies to study different traits, such as colour of the:

61 / 150

The amount of wheat grain colour is influenced by environmental factors:

62 / 150

Tallness in humans is recessive to:

63 / 150

A monochromat can perceive:

64 / 150

The inheritance of eye colour in Drosophil, some how seemed to be related to the:

65 / 150

The number of chromosomes in fruit fly, Drosophila melanogaster is:

66 / 150

About 20% haemophiliacs suffer from haemophilia B due to disturbance in factor:

67 / 150

The recombination frequency is directly proportional to the distance between the:

68 / 150

Intelligence is also a case of polygenic inheritance which is strongly influenced by:

69 / 150

An unusual white-eye male Drosophila fly mutant was observed by:

70 / 150

Glucokinase enzyme usually converts glucose to glucose - 6 - phosphate in:

71 / 150

Diabetics are unable to metabolise blood:

72 / 150

ABO locus is on chromosome 9, while H locus is on chromosome:

73 / 150

Hereditary characteristics pass from parents to offspring through genes in their:

74 / 150

The type of sex determination found in Drosophila, man and many other organisms is:

75 / 150

Mendel called the trait that appeared in F1 as:

76 / 150

90% of all diabetic patients are:

77 / 150

A gene with multiple phenotypic effect is called :

78 / 150

A physiological effect of an allele over its partner allele on the same gene locus is:

79 / 150

An individual with a hornozygous genotype is a :

80 / 150

O blood has neither A nor B antigen, but it does have:

81 / 150

The form of appearance of a trait is:

82 / 150

80% haemophiliacs, suffer from haemophilia A due to abnormality of factor

83 / 150

Mendel presented his findings to Brunn Society for the study of Natural Science in.:

84 / 150

Less than 1% people suffer from haemophilia C due to reduction in factor.

85 / 150

Hypophosphatemic rickets is an X linked:

86 / 150

Diabetes mellitus type II accounts for _____ of all diabetic patients:

87 / 150

When two contrasting pairs of trait are followed in the same cross, then alleles assort independently in:

88 / 150

All the altered alternate forms of a gene, whose number is more than two, are called:

89 / 150

Red colour blindness is:

90 / 150

The breakdown product of RBC is called:

91 / 150

A sex- limited trait is limited to only one sex due to:

92 / 150

The true colour blindness is:

93 / 150

XX-XY type or WZ ZZ type of sex determination pattern was discovered by. J. Seiler in 1914 in:

94 / 150

The search for mechanism of inheritance of sex started after discovery of:

95 / 150

Mendel proposed that each contrasting form of a trait, e.g., roundness or wrinkledness of seed was determined by particulate hereditary factors, which are called:

96 / 150

The basic unit of biological information is:

97 / 150

Persons having genotype DD or Dd have Rh - factor on their RBC
and are:

98 / 150

Phenotype AB has neither anti-A nor anti-B antibodies in the:

99 / 150

If a man of M blood group marries a woman of N blobd group, all their children will have blood group:

100 / 150

A continuously varying trait is encoded by alleles of two or more different gene pairs found at different loci, all influencing the same trait in an:

101 / 150

Genes can be mapped on a chromosome on the basis of their recombination:

102 / 150

Rh - blood group system is named Rh after:

103 / 150

An X - linked recessive trait in which both red and green cone cells are absent is:

104 / 150

Mendel called the trait that appeared in F1 as:

105 / 150

Rh - antigen was first discovered in it by:

106 / 150

Mendel called the trait, which was hidden F1, as:

107 / 150

All such altered alternate forms of a gene, whose number is more than two, are called:

108 / 150

Each type of cone cell has specific light absorbing proteins called:

109 / 150

The blood serum containing antibodies is called:

110 / 150

The two coexisting alleles for each trait in an individual segregate from each other, so that each gamete receives only one of the two alleles:

111 / 150

Persons with genotype dd do not have Rh factor and are:

112 / 150

XO - XX type of sex determination is found in:

113 / 150

The blood serum of A phenotype contains:

114 / 150

Individuals called universal donors are:

115 / 150

The farther apart two genes lie, greater are chances of their separation through:

116 / 150

T. H. Morgan provided experimental evidence in support of chromosomal theory of heredity through discovery of sex linkage in fruit fly:

117 / 150

Blue cone monochromacy is also called:

118 / 150

Type I diabetes arises due to deficiency of pancreatic hormone:

119 / 150

A true - breeding variety upon self - fertilization always produced offspring identical to :

120 / 150

Normal trichromat c colour vision is based on three different kinds of cone cells in the:

121 / 150

The expression of ABO blood type antigens by IA or 1B gene depends upon the presence of another gene:

122 / 150

The X- and -Y linked genes are also called:

123 / 150

In Drosophila XO is a sterile:

124 / 150

The quantitative traits are called ,polygenic traits, and their genes are:

125 / 150

Type I diabetes is also called Juvenile diabetes because it usually occurs in early age before:

126 / 150

XX-XY type or WZ ZZ type of sex determination pattern is common in:

127 / 150

A Y - linked trait 'SRY' gene on Y chromosome determines:

128 / 150

Human height is a more complex:

129 / 150

Crossing over is an exchange of segments between non-sister chromatids of homologous chromosomes during:

130 / 150

In cats the dominant allele W not only makes fur pure white but also causes:

131 / 150

All chromosomes other than sex-chromosomes are called:

132 / 150

Morgan's discovery of sex-linked inheritance was a great contribution to the understanding of:

133 / 150

A dichromat can perceive two primary colours but is unable to perceive the one whose opsins are missing due to:

134 / 150

About 50% of cases of MODY are caused by mutations in:

135 / 150

Allele for whiteness' in Drosophila is

136 / 150

The genetics of wheat grain colour was studied by:

137 / 150

The homologous chromosomes pair up length wise:

138 / 150

Humans have many X - linked traits of. which haemophilia and colour blindness- are:

139 / 150

A woman can be bald only when she is:

140 / 150

Genes are located at specific loci on

141 / 150

Chances for a man to be affected by haemophilia A & B than a woman are:

142 / 150

Rh - blood group system is defined on the basis of Rh factor present on the surface of:

143 / 150

The homologous pairs of chromosomes present in pea are:

144 / 150

Normal fruit flies, the wild type, have eyes:

145 / 150

A clear picture of the genetic basis of sex determination emerged after the discovery of :

146 / 150

B phenotype contains anti-A antibodies in the serum and agglutinate any RBC with antigen:

147 / 150

The position of a gene on the chromosome is called its:

148 / 150

Each allele of a gene pair occupies the same gene locus on its respective:

149 / 150

A gamete without any sex chromosome is called :

150 / 150

The chance of an event to occur is called:

Your score is

The average score is 53%

0%

[mtouch quiz 194]



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