MCQ
$XO-$ chromosomal abnormality in human beings causes
- ✓Turner’s syndrome
- BDown’s syndrome
- CKlinefelter’s syndrome
- Dnone of the above
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Statement $I$: The cerebral hemispheres are connected by nerve tract known as corpus callosum.
Statement $II$: The brain stem consists of the medulla oblongata, pons and cerebrum.
In the light of the above statements, choose the most appropriate answer from the options given below:
$I.$ It is controlled by multiple allele
$II.$ It shows codominance
$III.$ Codominance can be manifested phenotypically in human
$IV.$ It follows the Mendel law of inheritance
Which of the following statements (s) are correct?
Reason: Immune system weakens during $HIV$ infection.