Turner's syndrome is caused by

Question

Accepted Answer

B. loss of an X chromosome

1. Sex chromosome disorders come from a missing or extra X.
2. Turner's syndrome results from the loss of an X chromosome.
3. Klinefelter's syndrome, by contrast, comes from an additional X.
4. Chromosome 21 is involved in Down's syndrome, not in Turner's.
_Source: syllabus Biology Ch4 'Principles of Inheritance and Variation'_

Answer

gain of an X chromosome

Answer

loss of chromosome 21

Answer

gain of chromosome 21

Turner's syndrome is caused by

Keep practising Unit 5B: Mendelian Genetics & Inheritance