Chapter 22 Variation And Genetics Biology 12th Class Punjab MCQ Tests
12th Class Biology Chapter 22 MCQ Tests
Chapter 22 of 12th Class Biology has 56 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 56
Total Marks: 56
Time: Mins
Total Questions: 56
Total Marks: 56
Time: Mins
Min : 00 Sec Remaining
Question # 1
A dominant allele does not affect:
Question # 2
Genes that are present in both sexes of sexually reproducing species, but are expressed in only one sex and remain 'turned off' in the other are called as:
Question # 3
Situation in which no allele is dominant over other is called ____.
Question # 4
Person having antigen B on surface of RBCs has ____.
Question # 5
Individuals with the rare Bombay phenotype (hh) do not express ____.
Question # 6
The MN blood type is due to a ____ , present on the surface of red blood cells.
Question # 7
Heterozygous individuals have _____ allele.
Question # 8
The linkage group of sickle cell anemia, leukemia and albinism is present on chromosome ____.
Question # 9
What are the two blood tests?
Question # 10
With respect to the ABO blood group, a transfusion of AB blood may be given to a person who has blood type ____.
Question # 11
Fruit colour in summer squash is an example of epistasis. It is studied under one of the following category:
Question # 12
There are 48 chromosomes in a cell of a ______.
Question # 13
Genes on chromosome consists of ____ , which is the chemical basis of heredity.
Question # 14
When two genes are close together on the same chromosome these are linked genes, the linked genes does not follow:
Question # 15
The position of a gene on a chromosome is called:
Question # 16
A test cross is a way to explore the genotpye of an organism. In test cross first generation undergoes _____.
Question # 17
Example of codominance, occurs in blood of which one of the following organism?
Question # 18
When there are all the recessive alleles for controlling kernel colour , then wheat grain are _____ in colour.
Question # 19
Hemophilia is a sex-linked recessive trait in humans. If a father and a son are both hemophiliacs, but the mother is normal, her genotype must be:
Question # 20
Y linkage can be very hard to determine and prove. This is due to one of the following reason:
Question # 21
Glucokinase diabetes is one of the familial diabetes types that together are often called one of the following:
Question # 22
The number of autosome chromosomes in human are:
Question # 23
A test cross is a way to explore the genotpye of an organism. In test cross first generation undergoes _____.
Question # 24
Silene latifolia is a _____ specie with the individual plants producing either all female or all male flowers.
Question # 25
A trait is a particular characteristic, quality, or tendency that someone or something has. Example of traits includes:
Question # 26
The Bombay phenotype is a result of ____ interacting genes and is an example of ____.
Question # 27
In XY set of chromosomes, the sex chromosomes are also termed as_______.
Question # 28
Clumping of cells is known as ____.
Question # 29
Total number of alleles controlling wheat kernel colour are _____ in number.
Question # 30
Most common symptoms of Diabetes mellitus are one of the following?
Question # 31
Each chromosome is made up of DNA tightly coiled many times around proteins called _______ that support its structure.
Question # 32
Offspring generation of P1 (parental generation) is classified as:
Question # 33
Which of the following term is used for alternate forms of a gene?
Question # 34
In the fruit fly Drosophila, the vestigial gene plays a critical role in ____ development.
Question # 35
In the early 1900s, German botanist Carl Correns (18641933) studied incomplete dominance in one of the following plant:
Question # 36
The genes which do not follow law of independent assortment are:
Question # 37
Ratio of phenotypes (round yellow seeds, round green seeds, wrinkled yellow seeds and wrinkled green seeds) in Mendel's law of independent assortment of pea plant is:
Question # 38
The phenomenon where the effect of one gene (locus) is dependent on the presence of one or more 'modifier genes', i.e. the genetic background is known as:
Question # 39
When one gene influences two or more seemingly unrelated phenotypic traits it is termed as:
Question # 40
Some traits never occur in females, and occur in all male descendants of an affected male, these are called as:
Question # 41
Drosophila melanogaster is the scientific name of one of the following:
Question # 42
In humans, males have set of chromosome ______.
Question # 43
If a true breeding tall plant is crossed with true breeding short plant, the result would be:
Question # 44
Which one of the following region is found in the insulin gene promoter region?
Question # 45
One of the following term is not used to describe type II diabetes:
Question # 46
The linkage groups in man are:
Question # 47
The gene linkage minimize the chances of ____.
Question # 48
A form of melanin called eumelanin produce which one of the following colour ?
Question # 49
Recessive alleles at one locus mask the phenotypic expression of the other gene locus, such epistasis is called _____ epistasis.
Question # 50
Genes that affect growth rate in humans influencing both weight and height are:
Question # 51
Which one of the following is not the feature of wheat grain colour?
Question # 52
Pheomelanin is a form of melanin which produce _____ colour.
Question # 53
______ often progresses to type II diabetes is known as one of the following:
Question # 54
Most coat color genes have pleiotropic effects on _______.
Question # 55
Chickens that expressed the dominant frizzle gene produced feathers that ____ rather than lying flat against their bodies.
Question # 56
Examples of deviations from laws of inheritance proposed by Mendel includes ____.
Total Questions
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556
Question # 1
A dominant allele does not affect:
Question # 2
Genes that are present in both sexes of sexually reproducing species, but are expressed in only one sex and remain 'turned off' in the other are called as:
Question # 3
Situation in which no allele is dominant over other is called ____.
Question # 4
Person having antigen B on surface of RBCs has ____.
Question # 5
Individuals with the rare Bombay phenotype (hh) do not express ____.
Question # 6
The MN blood type is due to a ____ , present on the surface of red blood cells.
Question # 7
Heterozygous individuals have _____ allele.
Question # 8
The linkage group of sickle cell anemia, leukemia and albinism is present on chromosome ____.
Question # 9
What are the two blood tests?
Question # 10
With respect to the ABO blood group, a transfusion of AB blood may be given to a person who has blood type ____.
Question # 11
Fruit colour in summer squash is an example of epistasis. It is studied under one of the following category:
Question # 12
There are 48 chromosomes in a cell of a ______.
Question # 13
Genes on chromosome consists of ____ , which is the chemical basis of heredity.
Question # 14
When two genes are close together on the same chromosome these are linked genes, the linked genes does not follow:
Question # 15
The position of a gene on a chromosome is called:
Question # 16
A test cross is a way to explore the genotpye of an organism. In test cross first generation undergoes _____.
Question # 17
Example of codominance, occurs in blood of which one of the following organism?
Question # 18
When there are all the recessive alleles for controlling kernel colour , then wheat grain are _____ in colour.
Question # 19
Hemophilia is a sex-linked recessive trait in humans. If a father and a son are both hemophiliacs, but the mother is normal, her genotype must be:
Question # 20
Y linkage can be very hard to determine and prove. This is due to one of the following reason:
Question # 21
Glucokinase diabetes is one of the familial diabetes types that together are often called one of the following:
Question # 22
The number of autosome chromosomes in human are:
Question # 23
A test cross is a way to explore the genotpye of an organism. In test cross first generation undergoes _____.
Question # 24
Silene latifolia is a _____ specie with the individual plants producing either all female or all male flowers.
Question # 25
A trait is a particular characteristic, quality, or tendency that someone or something has. Example of traits includes:
Question # 26
The Bombay phenotype is a result of ____ interacting genes and is an example of ____.
Question # 27
In XY set of chromosomes, the sex chromosomes are also termed as_______.
Question # 28
Clumping of cells is known as ____.
Question # 29
Total number of alleles controlling wheat kernel colour are _____ in number.
Question # 30
Most common symptoms of Diabetes mellitus are one of the following?
Question # 31
Each chromosome is made up of DNA tightly coiled many times around proteins called _______ that support its structure.
Question # 32
Offspring generation of P1 (parental generation) is classified as:
Question # 33
Which of the following term is used for alternate forms of a gene?
Question # 34
In the fruit fly Drosophila, the vestigial gene plays a critical role in ____ development.
Question # 35
In the early 1900s, German botanist Carl Correns (18641933) studied incomplete dominance in one of the following plant:
Question # 36
The genes which do not follow law of independent assortment are:
Question # 37
Ratio of phenotypes (round yellow seeds, round green seeds, wrinkled yellow seeds and wrinkled green seeds) in Mendel's law of independent assortment of pea plant is:
Question # 38
The phenomenon where the effect of one gene (locus) is dependent on the presence of one or more 'modifier genes', i.e. the genetic background is known as:
Question # 39
When one gene influences two or more seemingly unrelated phenotypic traits it is termed as:
Question # 40
Some traits never occur in females, and occur in all male descendants of an affected male, these are called as:
Question # 41
Drosophila melanogaster is the scientific name of one of the following:
Question # 42
In humans, males have set of chromosome ______.
Question # 43
If a true breeding tall plant is crossed with true breeding short plant, the result would be:
Question # 44
Which one of the following region is found in the insulin gene promoter region?
Question # 45
One of the following term is not used to describe type II diabetes:
Question # 46
The linkage groups in man are:
Question # 47
The gene linkage minimize the chances of ____.
Question # 48
A form of melanin called eumelanin produce which one of the following colour ?
Question # 49
Recessive alleles at one locus mask the phenotypic expression of the other gene locus, such epistasis is called _____ epistasis.
Question # 50
Genes that affect growth rate in humans influencing both weight and height are:
Question # 51
Which one of the following is not the feature of wheat grain colour?
Question # 52
Pheomelanin is a form of melanin which produce _____ colour.
Question # 53
______ often progresses to type II diabetes is known as one of the following:
Question # 54
Most coat color genes have pleiotropic effects on _______.
Question # 55
Chickens that expressed the dominant frizzle gene produced feathers that ____ rather than lying flat against their bodies.
Question # 56
Examples of deviations from laws of inheritance proposed by Mendel includes ____.
Total Questions
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556
Biology MCQ Test by Topics
- +22.1 Genes, Alleles and Gene Pool
- +22.1.1 Gene Pool
- +22.2 Mendel,s Law of Inheritance
- +22.2.1 Mendel,s Interpretations
- +22.2.2 Test cross
- +22.2.3 Dihybrid and Dihybrid Cross
- +22.3 Dominence Relations
- +22.3.1 Complete Dominence
- +22.3.2 Incomplete Dominance
- +22.3.3 Codominance
- +22.4 MN Blood type or Blood Group System
- +22.5 Multiple Alleles
- +25.5.1 ABO - The First Discover Multiple Allelic Blood Group System in Man
- +25.5.2 Rh Blood Group System
- +22.6 Epistasis
- +22.6.1 Bombay Phenotype
- +22.7 Pleiotropy
- +22.8 Continuously Varying Traits
- +22.9 Gene Linkage
- +22.10 Crossing Over
- +22.10.1 Cross Over or Recombination Frequency
- +22.11 Sex Determination
- +22.11.1 Sex Chromosomes
- +22.11.2 Patterns of Sex Determination
- +22.11.3 Comparison of Chromosomal Determination of Sex between Drosophila and Humans
- +22.11.4 Sex Determination in Plants
- +22.12 Sex Linkage
- +22.12.1 Sex linkage in Drosophila
- +22.12.2 Sex - Linkage in Humans
- +22.12.3 Sex Limited Trait
- +22.12.4 Sex Influenced Trait
- +22.13 Diabetes Mellitus and its Genetic Basis
Biology
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Updated on: 13-05-2026
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