Zoology - Principles of Inheritance and Variation Question with Solution | TestHub
ZoologyPrinciples of Inheritance and VariationGenetic DisordersEasy2 minPYQ_2020
ZoologyEasysingle choice
In which of the following chromosomal disorders do we observe the features like a long furrowed tongue and short stature?
Options:
Answer:
A
Solution:
| Syndrome | Chromosomal set up | Features |
| Down’s Syndrome (first described by Langdon Down In 1866) | Trisomy of Chromosome number 21 | - Short statured with small round head. - Long and furrowed tongue. - Partially open mouth. - Physical, mental and psychomotor development retarded. |
| Klinefelter’s syndrome | Trisomy of sex chromosome (44 + XXY) | - Such males have some feminine features like gynaecomastia (development of breast), etc. - Sterile. |
| Turner’s syndrome | Monosomy of sex chromosome (44 + XO) | - Such females have rudimentary ovaries and lack other secondary sexual characters. - Sterile. |
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Genetic Disorders
⏱ 2mℹ️ Source: PYQ_2020
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