MCQ
Generally threshold of sound intensity for human is :
- A20-30 decibel
- ✓80-90 decibel
- C120-130 decibel
- D140-150 decibel
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Assertion $A$ : Amniocentesis for sex determination is one of the strategies of Reproductive and Child Health Care Programme.
Reason $R$ : Ban on amniocentesis checks increasing menace of female foeticide.
In the light of the above statements, choose the correct answer from the options given below.
$(i)$ Queen Elizabeth shows a number of haemophilic descendents.
$(ii)$ Variation in blood group prevalences due to incomplete dominance.
$(iii)$ Drosophila has three pairs of autosomal chromosomes.
$(iv)$ In birds, female is heterozygous.