You do a cross between two true breeding strains of zucchini. One has green fruit and the other has yellow fruit. The F1 plants were all green, but when these are crossed, the f2 plants consist of 9 green: 7 yellow.
a. explain the results. what are the genotypes of the two paternal strains
b. Indicate the phenotypes with frequencies, of the progeny of a testcross of the f1 plants
In mice, the Ay allele of the agouti mice is a recessive lethal allele, but its dominant for yellow coat color. What phenotypes and ratios of offspring would you expect from the cross of a mouse heterozygous at the agouti locus (genotype AyA) and also the albino locus (Cc) to an albino mouse (cc) heterozygous at the agouti locus (AyA)
a. explain the results. what are the genotypes of the two paternal strains
b. Indicate the phenotypes with frequencies, of the progeny of a testcross of the f1 plants
In mice, the Ay allele of the agouti mice is a recessive lethal allele, but its dominant for yellow coat color. What phenotypes and ratios of offspring would you expect from the cross of a mouse heterozygous at the agouti locus (genotype AyA) and also the albino locus (Cc) to an albino mouse (cc) heterozygous at the agouti locus (AyA)