Sex Linked Inheritance And Mendelian Disorder Test

Sex Linked Inheritance And Mendelian Disorder

This is online test 01 for CBSE class 12 Biology Principles of Inheritance and Variation (Sex linked inheritance and Mendelian disorder).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Study of family history about inheritance of particular trait for several generation is called
  • A
    Gene flow
  • B
    Genetic recombination
  • C
    Flow chart
  • D
    Pedigree analysis
    Correct
2
Which genetic disorder is caused due to the presence of an additional copy of X-chromosome resulting into a karyotype of 47, XXY
  • A
    Down’s Syndrome
  • B
    Anemia
  • C
    Klinefelter’s Syndrome
    Correct
  • D
    Turner’s Syndrome
3
Which condition among the following is lethal?
  • A
    2n-2
    Correct
  • B
    2n–1
  • C
    2n+2
  • D
    2n+1
4
Which of the following is not a Mendelian disorder?
  • A
    Hemophilia
  • B
    Colour blindness
  • C
    Thalassemia
  • D
    Down's syndrome
    Correct
5
If a colour blind woman marries a normal vision man, their sons will be
  • A
    All normal visioned
  • B
    3/4th colour blind and 1/4th normal
  • C
    1/2 colour blind and 1/2 normal
  • D
    All colour blind
    Correct
6
Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character
Question 6 figure 1
  • A
    The parent could not have had a normal daughter for this character
  • B
    The female parent is heterozygous
    Correct
  • C
    The male parent is homozygous dominant
  • D
    The trait under study could not be colour blindness
7
A male human is heterozygous for autosomal genes A and B and is also homozygous for hemophilic gene h. What proportion of his sperms will be ABh?
  • A
    1/32
  • B
    1/8
    Correct
  • C
    1/16
  • D
    1/4
8
Turner’s Syndrome is caused due to
  • A
    Additional copy of Y chromosome
  • B
    Additional copy of X chromosome
  • C
    Absence of one of the X chromosome
    Correct
  • D
    Absence of both the X chromosome
9
Which one of the following conditions in human is correctly matched with its chromosomal abnormality / linkage?
  • A
    Colour blindness - Y – linked
  • B
    Erythroblastosis foetalis - X – linked
  • C
    Down's syndrome - 44 autosomes +XXY
  • D
    Klinefelter's syndrome - 44 autosomes +XXY
    Correct
10
Large thick and Swollen tongue and dropping lips"----- are the symptoms of which genetic disorder
  • A
    Trisomy of 21st chromosome
  • B
    Down’s syndrome
    Correct
  • C
    Total number of chromosomes become 47
  • D
    Autosomal aneuploidy