Sex Linked Inheritance And Mendelian Disorder Test

Sex Linked Inheritance And Mendelian Disorder

This is online test 02 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
Given below is a pedigree chart of a family with five children. It shows the inheritance of attached ear lobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals. Which one of the following conclusions drawn is correct?
Question 1 figure 1
  • A
    The parents are heterozygous
    Correct
  • B
    The parents are homozygous dominant
  • C
    The parents are homozygous recessive
  • D
    The trait is Y-linked
2
A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughter and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease?
  • A
    Sex-linked dominant
  • B
    Sex-linked recessive
    Correct
  • C
    Sex-limited recessive
  • D
    Autosomal dominant
3
Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern?
Question 3 figure 1
  • A
    Haemophilia
    Correct
  • B
    Phenyl ketonuria
  • C
    Thalassemia
  • D
    Sickle Cell anemia
4
Which one of the following symbols and its representation used in human pedigree analysis is correct?
Question 4 figure 1
  • A
    unaffected male
  • B
    Mating between relatives
    Correct
  • C
    unaffected female
  • D
    affected male
5
Pedigree analysis is study of particular traits in
  • A
    Two generation only
  • B
    A several generation
    Correct
  • C
    Two species
  • D
    Two families
6
Which of the following genetic disease is autosome liked recessive trait?
  • A
    Phenylketonuria
  • B
    Sickle cell anemia
    Correct
  • C
    Hemophilia
  • D
    Colour blindness
7
Possibility of becoming hemophilic is extremely rare because mother of such female to be at least
  • A
    Hemophilic and father should be carrier
  • B
    Both should be hemophilic
  • C
    Non of parent should be hemophilic
  • D
    Carrier and father should be hemophilic
    Correct
8
Failure of cytokinesis after telophase stage of cell division results in the
  • A
    Decrease in the whole set of chromosome in organism
  • B
    Increase or decrease depends upon type of cell division
  • C
    An increase in whole set of chromosome in organism
    Correct
  • D
    No change in the chromosome number
9
In pedigree analysis the symbol shown below represnt
Question 9 figure 1
  • A
    Matting between relatives
  • B
    Affected individuals
    Correct
  • C
    Sex unspecified
  • D
    Normal individuals
10
Assertion: Turner’s syndrome is caused due to absence of one X chromosomes. Reason: The female suffering from turner’s syndrome is sterile as ovaries are rudimentary along with other secondary sexual characters.
  • A
    Assertion is incorrect but reason is correct
  • B
    Both assertion and reason are incorrect
  • C
    Both assertion and reason are correct
    Correct
  • D
    Assertion is correct but reason is incorrect