MCQ
A farmer crossed a walnut combed chicken with a single combed one and obtained all walnut combed chickens in $F_1$. The genotype of the parents was
- A$Rr\ Pp × rr\ pp$
- ✓$RR\ PP × rr\ pp$
- C$RR\ pp × rr\ pp$
- D$RR\ Pp × rr\ pp$
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$R$ : It could replace the use of monkeys to test the safety of batches of the vaccine.
Few such steps include
$I.$ ensuring use of disposable needles and syringes
$II.$ free distribution of condoms
$III.$ advocating safe sex
$IV.$ controlling drug abuse
Which of the steps given above are correct?
$(I)$ Khasi and Jaintia hills in Meghalaya
$(II)$ Aravalli hills of Rajasthan
$(III)$ Western ghat regions of Karnataka and Maharashtra
$(IV)$ Chanda and Bastar area of Madhya Pradesh