Home
Class 12
BIOLOGY
Down's syndrome is a genetic disorder wh...

Down's syndrome is a genetic disorder which takes place in presence of an additional copy of chromosome no. 19/21 (trisomy).

Text Solution

Verified by Experts

21
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF INHERITANCE AND VARIATION

    MODERN PUBLICATION|Exercise REVISION EXERCISES (MULTIPLE CHOICE QUESTIONS)|19 Videos
  • PRINCIPLES OF INHERITANCE AND VARIATION

    MODERN PUBLICATION|Exercise REVISION EXERCISES (VERY SHORT ANSWER TYPE QUESTIONS) (A. QUESTIONS FROM STATE BOARD EXAMINATIONS:)|39 Videos
  • PRINCIPLES OF INHERITANCE AND VARIATION

    MODERN PUBLICATION|Exercise MEMORY TEST (B. Complete the missing links)|19 Videos
  • ORGANISMS AND POPULATIONS

    MODERN PUBLICATION|Exercise Chapter Practice Test (Section - E)|2 Videos
  • REPRODUCTION IN ORGANISMS

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST (SECTION - C)|3 Videos

Similar Questions

Explore conceptually related problems

Presence of one additional copy of a chromosome known as :-

Assertion (A): A karyotype of 45 with X0 is the key genetic diagnostic point incase of an individual suffering from the Turner's syndrome. Reason ( R): It is caused due to the presence of an additional copy of the chromosome number 21.

Anti markovnikov's addition takes place in the presence of

Which disorder is caused in man by the presence of one extra sex chromosome?

State True of False (i) Hetrozygous female for baemophilia may transmit the disease to sons (ii) Affected individuals with phenylketonuna lack an enzyme that converts the amino acid phenylalanine into phenylpyruvic acid (iii) Klinefelter's syndrome is caused due to the presence of an additional copy of X-chromosome resulting into a karyotype of 47//XXX (iv) Failure of segregation of homologous pair of chromosomes during cell division cyclic results in Turner's syndrome.

Assertion :- Gynacomastia is observed in Turner's syndrome. Teason :- Such a disorder is caused due to the presence of eaxtra copy of X-chromosome.

Read the following text and answer the following questions on the basis of the same: Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome hence its other name, trisomy 21. The affected individual mental retarded, short statured with small round, head, furrowed tongue and partially open mouth, Physical, psychomotor and mental development is retarded. Down Syndrome is an extra copy which chromosome

Read the following text and answer the following questions on the basis of the same: Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome hence its other name, trisomy 21. The affected individual mental retarded, short statured with small round, head, furrowed tongue and partially open mouth, Physical, psychomotor and mental development is retarded. The number of chromosomes a child with Down syndrome has is

Read the following text and answer the following questions on the basis of the same: Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome hence its other name, trisomy 21. The affected individual mental retarded, short statured with small round, head, furrowed tongue and partially open mouth, Physical, psychomotor and mental development is retarded. Down syndrome is

Read the following text and answer the following questions on the basis of the same: Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome hence its other name, trisomy 21. The affected individual mental retarded, short statured with small round, head, furrowed tongue and partially open mouth, Physical, psychomotor and mental development is retarded. One of this trait is seen in a person with Down syndrome