Which of the following statements are correct about Klinefelter's Syndrome?
A. This disorder was first described by Langdon Down (1866).
B. Such an individual has overall masculine development. However, the feminine development is also expressed.
C. The affected individual is short statured.
D. Physical, psychomotor and mental development is retarded.
E. Such individuals are sterile.
Choose the correct answer from the options given below:

(1). C and D only
(2). B and E only
(3). A and E only
(4). A and B only

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ?

(1). 25%
(2). 50%
(3). 75%
(4). 100%

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Given below are two statements:
Statement I : Mendel studied seven pairs of contrasting traits in pea plants and proposed the Laws of Inheritance.
Statement II: Seven characters examined by Mendel in his experiment on pea plants were seed shape and colour, flower colour, pod shape and colour, flower position and stem height.
In the light of the above statements, choose the correct answer from the options given below:

(1). Both Statement I and Statement II are correct
(2). Both Statement I and Statement II are incorrect
(3). Statement I is Correct but Statement II is incorrect
(4). Statement I is incorrect but Statement II is correct

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F₁ generation, pink flowers where obtained. When pink flowers were selfed, the F₂ generation showed white, red from and pink flowers.
Choose the incorrecct statement from the following:

(1). Pink colour in F₁ is due to incomplete dominance.
(2). Ratio of F₂ is \(\displaystyle \frac{1}{4}\) (Red) : \(\displaystyle \frac{2}{4}\) (Pink) : \(\displaystyle \frac{1}{4}\) (White).
(3). Law of Segregation does not apply in this experiment.
(4). This experiment does not following the Principle of Dominance.

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

(1). both sons and daughters.
(2). only grandchildren.
(3). only sons.
(4). only daughters.

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F₁ plants were selfed, the resulting genotypes were in the ratio of

(1). 1 : 2 : 1; tall heterozygous : tall homozygous : dwarf
(2). 3 : 1; tall : dwarf
(3). 3 : 1; dwarf : tall
(4). 1 : 2 : 1; tall homozygous : tall heterozygous : dwarf

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

In context of amniocentesis, which of the following statement is incorrect ?

(1). It is used for prenatal sex determination
(2). It can be used for detection of down syndrome
(3). It can be used for detection of cleft palate
(4). It is usually done when a woman is between 14-16 weeks pregnant

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

What is the pattern of inheritance for polygenic trait?

(1). X-linked recessive inheritance pattern
(2). Mendelian inheritance pattern
(3). Non-mendelian inheritance pattern
(4). Autosomal dominant pattern

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation?

(1). Phenotypic ratior-9 : 7
(2). Phenotypic ratio =1 : 2: 1
(3). Phenotypic ratio - 3 : 1
(4). Phenotypic ratio - 9: 3: 3 : 1

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in F3 generation.

(1). Zero
(2). 1/4
(3). 2-Jan
(4). 8-Jan

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?

(1). They have 75% identical genetic content.
(2). They are monozygotic twins.
(3). They are fraternal twins.
(4). They were conceived through in vitro fertilization.

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?

(1). Only pink flowered plants
(2). Red, Pink as well as White flowered plants
(3). Only red flowered plants
(4). Red flowered as well as pink flowered plats

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Match List I with List II:

Choose the correct answer from the options given below:

(1). A-III, B-IV, C-I, D-II
(2). A-IV, B-III, C-II, D-I
(3). A-I, B-II, C-III, D-IV
(4). A-II, B-I, C-III, D-IV

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which one of the following can be explained on the basis of Mendel's law of Dominance?
A. Out of one pair of factors one is dominant and the other is recessive.
B. Alleles do not show any expression and both the characters appear as such in F2 generation.
C. Factors occur in pairs in normal diploid plants.
D. The discrete unit controlling a particular character is called factor.
E. The expression of only one of the parental characters is found in a monohybrid cross.
Choose the correct answer from the options given below:

(1). B, C and D only
(2). A, B, C, D and E
(3). A, B and C only
(4). A, C, D and E only

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black color seed plant, with which of the following genotype will you cross it?

(1). Bb
(2). BB/Bb
(3). BB
(4). bb

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which one of the following factors will not affect the Hardy-Weinberg equilibrium?

(1). Gene migrations
(2). Constant gene pool
(3). Genetic recombination
(4). Genetic drift

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Match List I with List II:

Choose the correct answer from the options given below:

(1). A-III, B-IV, C-I, D-II
(2). A-IV, B-I, C-II, D-III
(3). A-I, B-II, C-III, D-IV
(4). A-II, B-III, C-IV, D-I

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

As per ABO blood grouping system, the blood group of father is B⁺, mother is A⁺ and child is O⁺.
Their respective gentype can be
A. I^Bi / I^Ai / ii
B. I^BI^B / I^AI^AI / ii
C. I^AI^B /i I^AI /I^Bi
D. I^Ai / I^Bi /I^Ai
E. iI^B / iI^A / I^AI^B
Choose the most appropriate answer from the options given below:

(1). C & B only
(2). D & E only
(3). A only
(4). B only

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Frequency of recombination between gene pairs on same chromosome as a measure of the distance between genes to map their position on chromosome, was used for the first tìme by

(1). Sutton and Boveri
(2). Alfred Sturtevant
(3). Henking
(4). Thomas Hunt Morgan

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Broad palm with single palm crease is visible in a person suffering from:

(1). Turner's syndrome
(2). Klinefelter's syndrome
(3). Thalassemia
(4). Down's syndrome

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which one of the following symbols representsmating between relatives in human pedigree analysis?

(1).
(2).
(3).
(4).

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

The phenomenon of pleiotropism refers to

(1). presence of two alleles, each of the two genes controlling a single trait.
(2). a single gene affecting multiple phenotypic expression.
(3). more than two genes affecting a single character.
(4). presence of several alleles of a single gene controlling a single crossover.

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

XO type of sex determination can be found in

(1). Drosophila
(2). Birds
(3). Grasshoppers
(4). Monkeys

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which of the following occurs due to the presence of an autosome linked dominant trait?

(1). Sickle cell anaemia
(2). Myotonic dystrophy
(3). Haemophilia
(4). Thalassemia

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Mendel's law of Independent assortmnent does not hold goods for the genes that are located closely on the same chromosome.
Reason (R) : Closely located genes asSort independently.
Answer from the options given below:

(1). Both (A) and (R) are correct and (R) is the correct explanation of (A)
(2). Both (A) and (R) are correct but (R) is not the correct explanation of (A)
(3). (A) is correct but (R) is not correct
(4). (A) is not correct but (R) is correct

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

The recombination frequency between the genesa &c is 5%, b & c is 15%, b & d is 9%o, a & b is 20%,c & d is 24% and a & d is 29%. What will be thesequence of these genes on a linear chromosome?

(1). a, d, b, c
(2). d, b, a, c
(3). a, b, c, d
(4). a, c, b, d

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

The Adenosine deaminase deficiency results into:

(1). Dysfunction of Immune system
(2). Parkinson's disease
(3). Digestive disorder
(4). Addison's disease

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as:

(1). Satellite DNA
(2). Repetitive DNA
(3). Single nucleotides
(4). Polymorphic DNA

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?

(1). 50%
(2). 75%
(3). 25%
(4). 100%

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

ldentify the wrong statement with reference to the gene 'l' that controls ABO blood groups.

(1). A person will have only two of the three alleles.
(2). When I^A and I^B are present together, they express same type of sugar.
(3). Allele 'I' does not produce any sugar.
(4). The gene (I) has three alleles.

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Experimental verification of the chromosomal theory of inheritance was done by:

(1). Sutton
(2). Boveri
(3). Morgan
(4). Mendel

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits ?

(1). 2
(2). 14
(3). 8
(4). 4

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

What map unit (Cenimorgan) is adopted in the construction of genetic maps ?

(1). A unit of distance between two expressed genes, representing 100% cross over
(2). A unit of distance between genes on chromosomes, representing 1% cross over
(3). A unit of distance between genes on chromosomes, representing 50% cross over
(4). A unit of distance between two expressed genes, representing 10% cross ove

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by

(1). Gregor J. Mendel.
(2). Alfred Sturtevant.
(3). Sutton Boveri.
(4). T.H. Morgan.

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

What is genetic disorder in which an individual has an overall masculine develop-ment, gynaecomastia and is sterile ?

(1). Klinefelter's syndrome
(2). Edward syndrome
(3). Down's syndrome
(4). Turner's syndrome

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which of the following pairs is wrongly matched?

(1). T. H. Morgan - Linkage
(2). XO type sex determination - Grasshopper
(3). ABO blood grouping - Co-dominance
(4). Starch synthesis in pea - Multiple alleles

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Select the correct statement.

(1). Transduction was discovered by S. Altman.
(2). Spliceosomes take part in translation.
(3). Punnett square was developed by a British scientist.
(4). Franklin Stahl coined the term ‘‘linkage’’.

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which of the following characteristics represent Inheritance of blood groups' in humans?
A. Dominance
B. Co - dominance
C. Multiple allele
D. Incomplete dominance
E. Polygenic inheritance


(1). A , C and E
(2). B , D and E
(3). A , B and C
(4). B , C and E

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Among the following characters, which one was not considered by Mendel in his experiments on pea ?

(1). Pod – Inflated or Constricted
(2). Stem – Tall or Dwarf
(3). Trichomes – Glandular or Non-glandular
(4). Seed – Green or Yellow

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which one from the given below is the period for Mendel's hybridization experiments ?

(1). 1870-1877
(2). 1856-1863
(3). 1840-1850
(4). 1857 - 1869

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

The genotypes of a Husband and Wife are I^AI^B and I^Ai. Among the blood types of their children, how many different genotypes and phenotypes are possible ?

(1). 4 genotypes ; 4 phenotypes
(2). 3 genotypes ; 3 phenotypes
(3). 3 genotypes ; 4 phenotypes
(4). 4 genotypes ; 3 phenotypes

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Pick out the correct statements
I. Haemophilia is a sex linked recessive disease
II . Down's syndrome is due to aneuploidy
III . Phenylketonuria is an autosomal recessive gene disorder
IV . Sickle cell anaemia is an X linked recessive gene disorder

(1). II and IV are correct
(2). I , III and IV are correct
(3). I , II and III are correct
(4). I and IV are correct

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

In a test cross involving F₁ dihybrid flies, more parental-type offspring were produced than the recombinant type offspring. This indicates

(1). chromosomes failed to separate during meiosis
(2). the two genes are linked and present on the same chromosome
(3). both of the characters are controlled by more than one gene
(4). the two genes are located on two different chromosomes

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Match the terms in Column I with their description in Column II and choose the correct option.


(1). A - 2, B - 3, C - 4, D - 1
(2). A - 4, B - 1, C - 2, D - 3
(3). A - 4, B - 3, C - 1, D - 2
(4). A - 2, B - 1, C - 4, D - 3

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05

Which of the following most appropriately describes haemophilia ?

(1). X-linked recessive gene disorder
(2). Chromosomal disorder
(3). Dominant gene disorder
(4). Recessive gene disorder

Number of Attempts: 03

Correct Attempts: 01

Time Taken: 00:15

Average Time: 00:05