• The r gene and the y gene can each come from either mum or dad. Suppose mum = RrYy and dad = rryy. The four possibilities from your given answer all from mum: RrYy all from dad: rryy Rr from mum and yy from dad: Rryy rr from dad and Yy from mum: rrYy And they're all different, so 1:1:1:1 Oh, by the way I suspect y here stands for YELLOW meaning an arbitrary property. It doesn't mean the y chromosome.

Copyright 2020, Wired Ivy, LLC

Answerbag | Terms of Service | Privacy Policy