Albinism in corn plants is caused by a recessive and lethal gene that results in death before maturity. what will the adult phenotypic ratio for the F1 generation of heterozygous parents?
1 Answer
Dec 6, 2015
since the parents are heterozygous then the F1 genotype should theoretically be homozygous normal:heterozygous:recessive in the ratio 1:2:1, but since the recessive allele is lethal, then the recesive offspring will die so the phenotype of the available surviving one is all normal as the homozygous normal and the heterozygous genotype both give normal phenotype.
