if else statement

Hello,

I have a data frame like this:

head(b)

       FID   IID FLASER PLASER
1: fam1000 G1000      1      1
2: fam1001 G1001      1      1
3: fam1003 G1003      1      2
4: fam1005 G1005      1      1
5: fam1009 G1009      NA      2
6: fam1052 G1052      1      1
...

unique(b$PLASER)

[1]  1  2 NA

unique(b$FLASER)

[1]  1  2 NA

how can I do if else statement so that I am creating a
PHENO =2 if b$FLASER=2 or b$PLASER=2
PHENO=1 if b$FLASER=1 and b$PLASER=1
otherwise PHENO=NA

I tried this but I am not sure if this is correct:
b$pheno=ifelse(b$PLASER==1 & b$FLASER==1,1,ifelse(b$PLASER==2 |
b$FLASER==2,2,NA))

Thanks
Ana

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