Albinism in corn is recessive to normal green pigment. If a heterozygous plant is crossed with a homozygous dominant plant

heterozygous-plant
phenotypic-ratio

#1

Albinism in corn is recessive to normal green pigment. If a heterozygous plant is crossed with a homozygous dominant plant, what is the expected phenotypic ratio of green to albino offspring? Show your work up using the Punnett square highlighting the appropriate parental genotypes. a. 0:4 b. 2:2 c. 3:1 d. 4:0

Answer:

D. 4:0
The Punnett Square would look like this…

H h (for the heterozygous)
H
H
(for the homozygous)

The Square would then result in this:

H h
H HH Hh
H HH Hh
Since the albino corn can only be produced with an hh, then you will have no albino corn. Phenotype is the outside look of an organism and it is not possible for any of the corn to be white. They will all be green, making your answer D. 4:0