Q.1
Which is wrong about Mendel ? ... .. [ Tamil Nadu 2001 ]
  • a) He was born in 1822
  • b) Mendel presented his work in the form of a paper at Heinzendorf in 1856
  • c) Mendel carried out his experiments for 8 years
  • d) Mendel died in 1884
Q.2
Complete dominance does not occur in ... .. [ JIPMER 2002]
  • a) Mirabilis jalapa
  • b) Oenothera lamarckiana
  • c) Pisum sativum
  • d) Lathyrus odoratus
Q.3
Inheritance of blood group is a condition of ... ... [ kerala 2008 ] (a)Codominance (b) Incomplete dominance (c) Multiple alleles (d) Dominance
  • a) a, b
  • b) b, d
  • c) a, c and d
  • d) b, c
Q.4
For a given character, a gamet is always ... .. [ MHTCET 2000 ]
  • a) Homozygous
  • b) Pure
  • c) Hybrid
  • d) Heterozygous
Q.5
Mendel's principles are related to ... .. [ CPMT 1995 ]
  • a) Evolution
  • b) Reproduction
  • c) Variations
  • d) Heredity
Q.6
When heterozygous red flowered plant is crossed with white flowered plant the progeny will show a ratio of ... ... [ DPMT 2007 ]
  • a) 350 red : 350 white
  • b) 450 red :250 white
  • c) 380 red : 220 white
  • d) none of the above
Q.7
Gene with multiple effects is ... .. [ JKCMEE 2010 ]
  • a) Codominant
  • b) Pleiotropic
  • c) Epistatic
  • d) Supplementary
Q.8
Blue eye colour is recessive to brown eye colour. A brown eye man whose mother was blue-eyed marries a blue -eye woman. The children shall be ... ... [ CBSE 1991 ]
  • a) Both blue eyed and brown eyed 1 : 1
  • b) All brown eyed
  • c) All brown eyed
  • d) Blue eyed and brown eyed 3 : 1
Q.9
A cross involving two pairs of alleles is ... .. [ MPPMT 2000 ]
  • a) Crossing over
  • b) Genetics
  • c) Dihybrid cross
  • d) Monohybrid cross
Q.10
Heterozygous organism for two genes shall be ... ... [ MPPMT 1993 ]
  • a) RR YY
  • b) RrYY
  • c) RrYy
  • d) RRYy
Q.11
Heterozygous tall plant (Tt) is crossed with homozygous dwarf (tt) plant. Percentage of dwarf plants from the cross would be ... ... [ Odisha 2010 ]
  • a) 0%
  • b) 25%
  • c) 50%
  • d) 100%
Q.12
The ratio of 9:3:3:1 is due to .... .. [ Manipal 2005 ]
  • a) Segregation of characters
  • b) Independent assortment of genes
  • c) Crossing over of chromosomes
  • d) Homologous pairing between chromosomes
Q.13
Sickle cell anemia is ... .. [ Bih PMT 2001 ]
  • a) Sex linked inheritance
  • b) Autosomal heritable disease
  • c) Infectious disease
  • d) Deficiency disease
Q.14
Inheritance of skin colour in human beings is an example of ... ... [ AIIMS 1999 ]
  • a) Mendelian inheritance
  • b) Monogenic inheritance
  • c) Complementary genes
  • d) Polygenic inheritance
Q.15
Mendel was born in ... ... [ MPPMT 1999 ]
  • a) 17th century
  • b) 18th century
  • c) 19th century
  • d) 8th century
Q.16
Genotypic ratio of monohybrid cross is ... ... [ CPMT 2007 ]
  • a) 3:1
  • b) 1:2:1
  • c) 1:1
  • d) 9:3:3:1
Q.17
A woman with albinic father marries an albinic man. The proportion of her progeny is ... ... [ CBSE 1994 ]
  • a) 2 normal : 1 albinic
  • b) All normal
  • c) All albinic
  • d) 1 normal : 1 albinic
Q.18
Fruit colour in squash is an example of : ….[AIPMT 2014]
  • a) Complementary genes
  • b) Inhibitory genes
  • c) Recessive epistasis
  • d) Dominant epistasis
Q.19
A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind? [AIPMT 2014]
  • a) 50%
  • b) 75%
  • c) 25%
  • d) 0%
Q.20
A human female with Turner's syndrome :… [AIPMT 2014]
  • a) exhibits male characters
  • b) is able to produce children with normal husband.
  • c) has 45 chromosomes with XO.
  • d) has one additional X chromosome.
Q.21
Alleles are: …[AIPMT 2015]
  • a) heterozygotes
  • b) different phenotype
  • c) true breeding homozygotes
  • d) different molecular forms of a gene
Q.22
Multiple alleles are present: …[AIPMT 2015]
  • a) On non-sister chromatids
  • b) On different chromosomes
  • c) At different loci on the same chromosome
  • d) At the same locus of the chromosome
Q.23
A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offspring? …[AIPMT 2015]
  • a) O only
  • b) A and B only
  • c) A, B and AB only
  • d) A, B, AB and O
Q.24
ow many pairs of contrasting characters in pea plants were studied by Mendel in his experiments? …[AIPMT 2015]
  • a) Seven
  • b) Five
  • c) Six
  • d) Eight
Q.25
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 : …[AIPMT-2016]
  • a) 1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf
  • b) 1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf
  • c) 3 : 1 :: Tall : Dwarf
  • d) 3 : 1 :: Dwarf : Tall
Q.26
Match the terms in Column-I with their description in Column-II and choose the correct option : …[AIPMT-2016]
Column-I Column-II
(a) Dominance (i)Many genes govern a single character
(b) Codominance (ii) In a heterozygous organism only one allele expresses itself
(c) Pleiotropy (iii) In a heterozygous organism both alleles express themselves fully
(d) Polygenic inheritance (iv) A single gene influences many characters
  • a) (a) → (ii); (b) → (i); (c) → (iv); (d) → (iii)
  • b) (a) → (ii); (b) → (iii); (c) → (iv); (d) → (i)
  • c) (a) →(iv); (b) → (i); (c) → (ii); (d) → (iii)
  • d) (a) →(iv) ; (b) → (iii); (c) → (i); (d) → (ii)
Q.27
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates :- …[AIPMT-2016]
  • a) The two genes are located on two different chromosomes.
  • b) Chromosomes failed to separate during meiosis.
  • c) The two genes are linked and present on the same chromosome.
  • d) Both of the characters are controlled by more than one gene.
Q.28
Which of the following statements is not true of two genes that show 50% recombination frequency ? …[NEET 2013]
  • a) The genes may be on different chromosomes
  • b) The genes are tightly linked
  • c) The genes show independent assortment
  • d) If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis
Q.29
If two persons with 'AB' blood group marry and have sufficiently large number of children, these children could be classified as 'A' blood group : 'AB' blood group : 'B' blood group in 1 : 2 : 1 ratio. Modern technique of protein electrophoresis reveals presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of …[NEET 2013]
  • a) Codominance
  • b) Incomplete dominance
  • c) Partial dominance
  • d) Complete dominance
Q.30
Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents ? …[NEET 2013]
  • a) Incomplete dominance
  • b) Law of dominance
  • c) Inheritance of one gene
  • d) Co-dominance
Q.31
If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child? …[NEET 2013]
  • a) No chance
  • b) 50%
  • c) 25%
  • d) 100%
Q.32
If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is :- …[NEET 2016]
  • a) 0.75
  • b) 1
  • c) 0
  • d) 0.5
Q.33
Among the following characters, which one was not considered by Mendel in his experiments on pea? ….[NEET- 2017]
  • a) Stem – Tall or Dwarf
  • b) Trichomes – Glandular or non-glandular
  • c) Seed – Green or Yellow
  • d) Pod – Inflated or Constricted
Q.34
Which one from those given below is the period for Mendel's hybridization experiments? ….[NEET- 2017]
  • a) 1856 - 1863
  • b) 1840 - 1850
  • c) 1857 - 1869
  • d) 1870 - 1877
Q.35
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement. ….[NEET- 2017]
  • a) Both are due to a qualitative defect in globin chain synthesis
  • b) Both are due to a quantitative defect in globin chain synthesis
  • c) Thalassemia is due to less synthesis of globin molecules
  • d) Sickle cell anemia is due to a quantitative problem of globin molecules
Q.36
A gene showing codominance has : [ ReAIPMT 2015]
  • a) both alleles independently expressed in the heterozygote
  • b) one allele dominant on the other
  • c) alleles tightly linked on the same chromosome
  • d) alleles that are recessive to each other
Q.37
Which of the following pairs in wrongly matched [NEET 2018]
  • a) Starch synthesis in pea : Multiple alleles
  • b) ABO blood grouping : Co-dominance
  • c) XO type sex determination : Grasshopper
  • d) T.H. Morgan :Linkage
Q.38
Which of the following characteristics represent 'Inheritance of blood groups' in humans ? [NEET 2018] a. Dominance b. Co-dominance c. Multiple dominance d. Incomplete dominance e. Polygenic inheritance
  • a) b, c and e
  • b) a, b and c
  • c) b, d and e
  • d) a, c and e
Q.39
f a character is controlled by polygenic principle where there are three gene namely A, B and C which among the following groups of genotypes are able to produce the same phenotype Question submitted by Jennifer Jose Mathew
  • a) AABBCC, AaBbCc,aabbcc
  • b) aaBBcc, AaBbcc, aabbCC
  • c) AAbbcc, aaBBCC, aaBbcc
  • d) non of the above
Q.40
In Drosophila gene for white eye colour is also responsible for depigmentation of body parts. It is an example of ... .. [ kerala 2005 ]
  • a) Oncogene
  • b) Epistatic gene
  • c) Hypostatic gene
  • d) Pleiotropic gene
Q.41
Cross between by hybrid and recessive parent is ... ... [ BHU 2001 ]
  • a) Back cross
  • b) Test cross
  • c) Monohybrid cross
  • d) Dihybrid cross
Q.42
ion Q10) Match the following
Column I Column II
Single gene inheritance a. 1 : 1: 1 : 1
Double gene inheritance b. 1 : 2 : 1
Test cross c. 3 : 1
Incomplete dominance d. 9 : 3 : 3 : 1
  • a) (1 - c) (2 - d) (3 - a) (4 - b)
  • b) (1 - d) (2 - c) (3 - b) (4 - a)
  • c) (1 - a) (2 - b) (3 - d) (4 - c)
  • d) (1- d) (2 - b) (3 - a) (4 - c)
Q.43
ion Q65) Today ________ are extensively used as a _______ point in the sequencing of whole genome
  • a) Pedigree charts, conclusive
  • b) Genetic maps, starting
  • c) Pedigree charts, starting
  • d) Genetic maps, conclusive
Q.44
Dominate epistasis ratio is ... [ kerala 2009 ]
  • a) 9:7
  • b) 9:3:3:1
  • c) 9:3:4
  • d) 12:3:1
Q.45
Source of mendelian recombination is .... .. [ DPMT 2001 ]
  • a) linkage
  • b) independent assortment
  • c) mutations
  • d) Dominant traits
Q.46
In sickle cell anaemia, there is change in amino acid in β chain at position .... .. [ Har PMT 2001 ]
  • a) VI
  • b) VII
  • c) IX
  • d) X
Q.47
RrTy yield gamete types .... [ MPPMT 1993 ]
  • a) One
  • b) Two
  • c) three
  • d) Four
Q.48
Incase of incomplete dominance, F2 generation has .. ... [ BHU 1995 ]
  • a) Genotypic ratio equal to phenotypic ratio
  • b) Genotypic ratio is 3:1
  • c) Phenotypic ratio is 3:1
  • d) None of the above
Q.49
tion Q1) Coloured endosperm (C) is dominant to colourless endosperm (c) while smooth seeds (S) are dominant to wrinkled seed (s) and Waxy endosperm (W) is dominant to starchy endosperm (w). What is the genotype of Homozygous colourless, smooth and waxy endosperm and homozygous coloured, wrinkled and starchy endosperm?
  • a) ccSSWW and CCssWW
  • b) ccSSWW and CCssww
  • c) CCSSWW and CCssww
  • d) ccSSWW and CCSSww
Q.50
tion Q2) Select the incorrect statement. ... [NEET 2019]
  • a) Male fruit fly is heterogametic
  • b) In male grasshoppers 50% of sperms have no sex-chromosome
  • c) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg
  • d) Human males have one of their sexchromosome much shorter than the other
0 h : 0 m : 1 s