1) Down syndrome is the case of a) trisomy 21 b) trisomy 13 c) trisomy 18 2) Corpus luteum produces a) estradiol only b) progesterone only c) estradiol and progesterone 3) The hypothalamus functions in a a) continuous manner b) pulsatile manner c) both a and b 4) If a pedigree shows an impression where only males are affected, then the gene understudy is: a)  autosomal b) X or Y-linked c) dominant 5) Cytotoxicity is done by: a) Tc cells b) Th cells c) B cells

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