Inheritance and Variation Principles MCQ

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• Which of the following is an incorrect statement with respect to organelle inheritance?
  ক

  Iojap inheritance in maize

  খ

  Inheritance of poky

  গ

  Plastid inheritance in Mirabilis jalapa

  ঘ

  Coiling of shells
• What is the inheritance of characters by plasmagenes known as?
  ক

  Extrafield inheritance

  খ

  Maternal inheritance

  গ

  Extrachromosomal inheritance

  ঘ

  Maternal inheritance
• Which of the following is the representation of a dominant trait?
  ক

  Widow’s peak

  খ

  Tongue non-roller’s

  গ

  Fused ear lobes

  ঘ

  Tay-Sachs disease
• Which of the following is a representation of a recessive trait?
  ক

  Achondroplasia

  খ

  Blue eyes

  গ

  Huntington disease

  ঘ

  Brown eyes
• Which of the following is not the character of the person suffering from Turner’s syndrome?
  ক

  Short stature

  খ

  Poor breast development

  গ

  Well developed ovaries

  ঘ

  No menstruation
• Which of the following is not the character of a person suffering from Klinefelter’s syndrome?
  ক

  Short stature

  খ

  Breast development

  গ

  Small testes

  ঘ

  Female type pubic hair pattern
• There are no loops on the finger-tips of the people suffering from Down’s syndrome.
  ক

  True

  খ

  False
• Which of the following is incorrect with respect to Klinefelter’s syndrome?
  ক

  The fusion of an abnormal egg with normal sperm

  খ

  The fusion of a normal egg with an abnormal sperm

  গ

  The fusion of a normal egg with a normal sperm

  ঘ

  An additional copy of X-chromosome
• What is the genotype of the person suffering from Klinefelter’s syndrome?
  ক

  44+ XXX

  খ

  42+ XXX

  গ

  44+ XXY

  ঘ

  42+ XXY
• Which of the following is not a feature of the tongue of the person suffering from Down’s syndrome?
  ক

  Furrowed tongue

  খ

  Big tongue

  গ

  Wrinkled tongue

  ঘ

  Straight tongue
• Which of the following is the characteristic feature of Down’s syndrome?
  ক

  Congenital heart disease

  খ

  Short stature

  গ

  Broad palm with palm crease

  ঘ

  Underdeveloped gonads
• Only mental development is retarded in the case of Down’s syndrome.
  ক

  True

  খ

  False
• Which of the following is not a characteristic feature of Down’s syndrome?
  ক

  Very tall

  খ

  Small round head

  গ

  Furrowed tongue

  ঘ

  Partially open mouth
• In which year, Down’s syndrome was described?
  ক

  1866

  খ

  1986

  গ

  1898

  ঘ

  1968
• On which of the following chromosomal disorders are based on?
  ক

  Mutant allele and their defective products

  খ

  Imbalance in chromosome number and chromosome arrangement

  গ

  Mutant allele and chromosome arrangement

  ঘ

  Mutant allele and imbalance in chromosome number
• Which of the following is the carrier of genetic information?
  ক

  Proteins

  খ

  Amino acids

  গ

  Carbohydrates

  ঘ

  DNA
• Which of the chromosome mutation leads to Beta-thalassemia?
  ক

  21

  খ

  10

  গ

  11

  ঘ

  13
• Which of the following statements is incorrect with respect to alpha-thalassemia?
  ক

  Involves the genes HBA1 and HBA2

  খ

  Inherited in a Mendelian dominant fashion

  গ

  Connected to the deletion of the 16p chromosome

  ঘ

  Result in decreased α-globin production
• By which of the following defects, thalassemia is caused?
  ক

  Defects in RBCs

  খ

  Defects in WBCs

  গ

  Defects in platelets

  ঘ

  Defects in lymphocytes
• In which of the following places thalassemia is not common?
  ক

  Indian subcontinent

  খ

  South-east Africa

  গ

  Mediterranean

  ঘ

  North America
• Heterozygous individuals of sickle cell anaemia are severely affected by the disease.
  ক

  False

  খ

  True
• How many genotypes of sickle cell anaemia are possible in a population?
  ক

  One

  খ

  Two

  গ

  Three

  ঘ

  Four
• What is the percentage of children being a carrier of haemophilia if their mother is a carrier and their father is a normal man?
  ক

  25%

  খ

  50%

  গ

  75%

  ঘ

  100%
• What is the full form of AHG?
  ক

  Anti haemophilic globulin

  খ

  Anti haemoglobin

  গ

  Allergic haemoglobin

  ঘ

  Allergic haemophilic globulin
• How can a female be haemophilic?
  ক

  Mother is haemophilic and father is normal

  খ

  Mother is a carrier and father is haemophilic

  গ

  Both mother and father are carriers

  ঘ

  Both mother and father are haemophilic
• Haemophilia is an autosomal recessive trait.
  ক

  True

  খ

  False
• What percentage of children are colour blind if their father is colour blind and the mother is a carrier for Colour blindness?
  ক

  25%

  খ

  50%

  গ

  75%

  ঘ

  100%
• What will be the percentage of sons having a normal vision if the father has normal vision and their mother is colour blind?
  ক

  0%

  খ

  25%

  গ

  50%

  ঘ

  100%
• Which of the following type of inheritance is shown by colour blindness?
  ক

  Chromosomal inheritance

  খ

  Criss-cross inheritance

  গ

  Zig-zag inheritance

  ঘ

  Up-down inheritance
• When can a female be colour blind?
  ক

  Father has normal vision and the mother is a carrier

  খ

  Father has normal vision and mother is colour blind

  গ

  Father is colour blind and the mother has a normal vision

  ঘ

  Father is colour blind and mother is a carrier