how to create a new column from two columns with conditions

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      2      1
6: fam1052 G1052      1      1
...

My conditions for creating a new column PHENO would be this:

if FLASER or PLASER =2 then PHENO=2
otherwise PHENO=1

so result would look like this:

head(b)

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

Thanks
Ana
...