Question

What phenotypic ratio would be expected in a cross between two pink snapdragon plants? There is incomplete dominance in snapdragons: rr is red ww is white, and rw ispink.1 red: 1 while1 red: 1 pink1 red: 2 pink 1 white

Answer 1

the phenotypic ratio would be

1:2:1

1 red, 2 pink, 1 white

Explanation

in incomplete dominance both alleles at a locus are partially expressed in the phenotype resulting in an intermediate phenotype.

pink is incomplete dominance between a white and red allele.

when we cross two pink snap dragons we would get the genotypes shown in the punnett diagram below.

from the punnett diagram we would get the following genotypes

rr

rw

rw

ww

these would have the following phenotypes

rr- red

rw - pink

rw - pink

ww - white

and so the phenotypic ratio would be

1:2:1

1 red, 2 pink, 1 white