Understanding XXY Chromosome Anomaly
A sex chromosome anomaly involving an extra X chromosome results in a genotype of XXY. This specific genetic condition leads to the development of Klinefelter's Syndrome.
Key Points:
- Klinefelter's Syndrome: Characterized by the presence of an extra X chromosome in males, resulting in an XXY karyotype.
- Down Syndrome: Caused by trisomy 21, meaning an extra copy of chromosome 21.
- Turner's Syndrome: Occurs when a female is missing one X chromosome, resulting in a XO karyotype.
- Phenylketonuria: An inherited metabolic disorder, not a chromosomal abnormality.
Therefore, the XXY sex chromosome anomaly specifically results in Klinefelter's Syndrome.
Important Questions from Human genetics
- Match List - I with List - II :
List - I List - II (a) Klinefelter Syndrome (i) trisomy 21 (b) Turner Syndrome (ii) xxy (c) Down Syndrome (iii) xo (d) Phenylketonuria (iv) xyy (v) Inability to metabolize auinoacid
Code : - The pattern of DNA polymorphisms in a single chromosome is called:
Arrange the following 'relationships to the proband', in descending order with respect to the proportion of genes inherited from the common ancestor-
A. Second Cousin
B. Half Sib
C. Monozygotic twin
D. Dizygotic twin
Choose the correct answer from the options given below:
- Match the LIST-I with LIST-IIChoose the correct answer from the options given below:
LIST-I (Scholars) LIST-II (Area of Research) A. S.C. Tewari I. Paleoanthropology B. S.R.K. Chopra II. High Altitude Adaptation C. D.P. Mukherjee III. Biochemical Genetics D. Amitabha Basu IV. Dermatoglyphics Sampling of 200 persons for their ABO blood group was done from an urban area. The types of blood group observed in the given population are as follows:
A = 60, B = 32, AB = 10 and O = 98
Which of the following gives the correct frequency of blood group determining alleles IA , IB and IO in the given population?
