In the garden pea, orange pods (o) are recessive to green pods (+), and sensitivity to pea mosaic virus (v) is recessive to resistance to the virus (+). A plant with orange pods and sensitivity to the virus was crossed to a true-breeding plant with green pods and resistance to the virus. The F1 progeny were then test-crossed to plants with orange pods and sensitivity to the virus with the following results: 160 orange pods, virus sensitive 36 orange pods, virus resistant 165 green pods, virus resistant 39 green pods, virus sensitive 1. What are the gamete frequencies of the recombinants and non-recombinants?  2. What are the expected frequencies of the recombinant and non-recombinant genotypes?

In the tomato, three genes are linked on the same chromosome. Tallis dominant to dwarf, skin that is smooth is dominant to skin that ispeachy, and fruit with a normal rounded tomato shape is dominantto oblate (flattened) shape. A plant that is true-breeding for thedominant traits was crossed to a dwarf plant with peachy skin andoblate fruit. The F1 plants were then testcrossed to dwarf plants withpeachy skin and oblate fruit. The following results were obtained: 151 tall, smooth, normal33 tall, smooth, oblate11 tall, peach, oblate2 tall, peach, normal155 dwarf, peach, oblate29 dwarf, peach, normal12 dwarf, smooth, normal0 dwarf, smooth, oblate Construct a genetic map that shows the order of these three genesand the distances between them?

Cross a heterozygous dominant purple flowered plant to a recessive white flowered plant. What is (are) the phenotypes of the F1? And what is the phenotypic ratio?

A white Labrador retriever of the genotype BB ee was crossed with a brown retriever of the genotype bb E e. What would their F1 offspring look like?

A cross was made between a Red and Long flowered (RRLL) plant and a blue and dwarfflowered (rrll) plant. The resulting F1 plants were testcrossed to blue and dwarf plants.160 red and long40 red and dwarf38 blue and long150 blue and dwarfAfter showing your Punnett square for the testcross, use the Chi Square test to determine if thegenes are assorting independently. If they are linked, calculate the distance between the twogenes. Show your work.

In the tomato, yellow flowers (Y) is dominant to white flowers (y). A true-breeding yellow flowered strain is crossed with a true-breeding white flowered strain.A. If the F1 generation is self crossed, what will be the genotypes and phenotypes of the progeny and in what portions are they expected? B. If an F1 plant were crossed with a plant from true-breeding white flowered strain, what will be the genotypes and phenotypes of the progeny and in what portions are they expected?

In guinea pigs, rough coat (R) is dominant to smooth coat (r). If a homozygous rough-coated animal is crossed with a smooth-coated one: What will be the phenotype(s) of the F1 generation? What will be the phenotype(s) of the F2 generation? What will be the phenotype(s) of the offspring resulting from a cross of an F1 individual back to its rough parent? What will be the phenotype(s) of the offspring of a cross of an F1 individual back to its smooth parent?

In watermelons, bitter fruit (B) is dominant over sweet fruit (b), andyellow spots (S) are dominant over no spots (s). The genes for these two characteristics assort independently. A homozygous plant that has bitter fruit and yellow spots is crossed with a homozygous plant that has sweet fruit and no spots. The F1 are intercrossed to produce the F2. Q. If an F1 plant is backcrossed with the sweet, unspotted parent, what phenotypes and proportions are expected in the offspring?

A rooster with a particular comb morphology calledwalnut was crossed to a hen with a type of comb morphology known as single. The F1 progeny all had walnut combs. When F1 males and females were crossedto each other, 93 walnut and 11 single combs wereseen among the F2 progeny, but there were also29 birds with a new kind of comb called rose and32 birds with another new comb type called pea.a. Explain how comb morphology is inherited.b. What progeny would result from crossing a homozygous rose-combed hen with a homozygouspea-combed rooster? What phenotypes and ratioswould be seen in the F2 progeny?c. A particular walnut rooster was crossed to a peahen, and the progeny consisted of 12 walnut,11 pea, 3 rose, and 4 single chickens. What are thelikely genotypes of the parents?d. A different walnut rooster was crossed to a rosehen, and all the progeny were walnut. What are thepossible genotypes of the parents?

An insect from a strain breeding for white eyes (RRww) was crossed to an insect from a strain breeding for cream eye (rrWW). The F1 all had red eyes. The F1s were intercrossed to produce F2 generation that consisted of 175 red eyed:81 white eyed. Provide the genetics of inheritance of this trait. Provide the genotypes for the F1s and F2s of this cross.