Consider linked genes between body colour and eye colour of a fly. The golden bodied red eyed are normal ones whereas whereas grey bodied grey color eyed are double mutant ones. What is the phenotype with which the female fly was crossed to produce the four offspring?

Consider a dihybrid cross between black bodied, red eyed fly and a black bodied green eyed fly producing four offsprings as follows. Determine the genotypic constituent of the other parent. BbRr BBrr Bbrr bbrr

In fruit flies, the gene for red eyes(R) is dominant over the gene for white eyes(r) and is sex linked. If a true breeding red eyed male, all the offspring are red eyed. However, if a true breeding white eye breeding white eye female is mated with a red eyed male, all the offspring will be white eyed. Explain this apparent contradiction using genetic cross

n Drosophila melanogaster, black body (b) is recessive to gray body (b+), purple eyes (pr) are recessive to red eyes (pr+), and vestigial wings (vg) are recessive to normal wings (vg+). The loci encoding these traits are linked, with the following map distances:b and pr:          6 mupr and vg:        13 mupr lies in the middle of b and vgThe interference among these genes is 0.5.A fly with a black body, purple eyes and vestigial wings is crossed with a fly homozygous for a gray body, red eyes and normal wings. The female progeny are then crossed with males that have a black body, purple eyes and vestigial wings. If 1000 progeny are produced from this test cross, what will be the phenotypes and proportions of the progeny?

In fruit flies, having red eyes is dominant to white eyes. In a specific scientific cross, a heterozygous red-eyed fly is crossed with another heterozygous red-eyed fly.Fruit Fly (Drosophila immigrans) by Martin Cooper (CC BY 2.0)What percentage of their offspring will have white eyes?Elimination ToolSelect one answerA0%0%B25%25%C50%50%D75%75%

Suppose you carry out a cross with fruit flies where you follow the inheritance of alleles at four different gene loci: one locus controls body color, one locus controls eye color, one locus controls wing length, and one locus controls wing shape. At each locus, there is a dominant allele and a recessive allele. The four loci follow Mendel's principle of independent assortment. A male that is heterozygous for all four loci is crossed with a female that is also heterozygous at all four loci. Complete the sentences that predict the results of this cross using the correct terms.The probability that a male gamete will have all four recessive alleles is .The probability that the F₁ offspring will have two dominant alleles at the gene locus that controls body color is .The probability that the F₁ offspring will be homozygous at the gene locus that controls body color is .The probability that the F₁ offspring will have two dominant alleles at all four gene loci is .The probability that the F₁ offspring will have the dominant phenotype for all four traits is .