Here, Cross: = WW × ww
Here, W(white) is dominant over w(yellow).
Offspring: Ww , Ww, Ww, Ww
1) Genotypes: Ww , Ww, Ww, Ww
2) Phenotypes: They all will be "White"
3) Genotypic ratio = WW:Ww:ww = 0 : 1 : 0
4) Phenotypic ratio = White : Yellow = 1 : 0
Hope this helps!
The investigators can locate fingerprints to find out who the criminal is. Other things such as blood, saliva can be tracked down to the criminal
There may be many forms of a single gene. Each such form is called an allele