SCIENCE
GENETIC AND MENDELS LAW OF HEREDITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Changes in the number of chromosomes or gene mutations result in various kinds of genetic disorders in man listed in columan I. Match these disorder with the cause in column II and select correct answer from the codes given below the columns. Columns I (A) Down,s syndrome (B) Klinefelter,s (C) Turner,s syndrome Hemophilia Columns II 1.Lack of an X 2. Recessive gene 3. Trisomy of chromosome 21 Additional X chromosome (XXY) x (XXY)
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1 3 4 2
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3 4 1 2
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1 2 3 4
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4 2 1 3
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Explanation:
Detailed explanation-1: -Down syndrome is probably the most well-known example of a chromosomal aneuploidy. Besides trisomy 21, the major chromosomal aneuploidies seen in live-born babies are: trisomy 18; trisomy 13; 45, X (Turner syndrome); 47, XXY (Klinefelter syndrome); 47, XYY; and 47, XXX.
Detailed explanation-2: -A chromosome mutation that causes individuals to have an abnormal number of chromosomes is termed aneuploidy. Aneuploid cells occur as a result of chromosome breakage or nondisjunction errors that happen during meiosis or mitosis.
Detailed explanation-3: -Down syndrome (Trisomy 21). FragileX syndrome. Klinefelter syndrome. Triple-X syndrome. Turner syndrome. Trisomy 18. Trisomy 13. 20-Aug-2021
There is 1 question to complete.