Yellow seed color is dominant to green seed color. A plant that has homozygous recessive genotype is crossed with a heterozygous plant. What is the probability of the offspring's phenotype?
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Yellow seed color is dominant to green seed color. A plant that has homozygous recessive genotype is crossed with a heterozygous plant. What is the probability of the offspring's
A. 75% yellow seeds
B. 50% green seeds
C. 75% green seeds
D. 100% green seeds
E. 100% yellow seeds
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- In a test cross, peas of an unknown genotype are crossed with peas of a known genotype. In this example, smooth peas are the unknown and wrinkled peas are the known (rr). If half of the offspring from that cross are smooth and half are wrinkled, what is the genotype of the unknown plant? O a. Homozygous dominant: RR O b. Homozygous recessive: rr Oc. Incomplete dominance d. Heterozygous dominant: Rr CLEAR MY CHOICEA pink-flowered four-o’clock is crossed to a red-flowered plant.What is the expected outcome for the offspring's phenotypes?a. All pinkb. All redc. 1 red : 2 pink : 1 whited. 1 red : 1 pinkA. In corn, yellow kernels (Y) are dominant to white kernels (y). If you cross two plants with the Yy genotype, what percentage of the offspring will have yellow kernels? B.What percentage of the offspring will have the same genotype as the parent plants? C.Say you're also interested in corn plant height where tall plants (T) are dominant to short plants (t). You want to save some time and just cross your plants once. The P1 genotypes are YyTT and YYTt. Will you get any short plants with yellow kernels from this cross? Why or why not? D. If these traits, kernel color and height were linked, how would this affect your experimental outcomes? Would you expect the laws of Mendelian genetics to still apply? Why or why not ?
- In pea plants, round pea shape is dominant to wrinkled pea shape. If two pea plants that are true breeding for wrinkled peas are crossed, what shape of pea will the first generation of offspring have? O a. one quarter of the peas will be round and three quarters will be wrinkled O b. three quarters of the peas will be round and one quarter will be wrinkled O c. half of the flowers will be round and one quarter will be wrinkled O d. all of the peas will be wrinkled O e. all resulting peas will be roundin garden peas tall vine is dominant over short vine and round pea pod is dominant over wrinkled pea pod. cross a heterozygous tall round pea plant with a homozygous shorr wrinkled pea plant. show the genotypes and phenotypes of the f offspring and the probability of eachT = Tall t = short pollen from a tall pea plant T T eggs from a tall pea plant T TT TT t Tt Tt In the square shown, which of the following is true about the offspring resulting from the cross? Multiple Choice a. Half are expected to be short. b. All are expected to be tall. c. All are expected to be short. d. All are expected to be of medium height.
- When two monohybrid round squashes are crossed, the offspring ratio is ¼ flat to ½ oblong to ¼ round. Squash shape, therefore, is determined by incomplete dominance. What offspring ratio would you expect from a cross between a squash plant with oblong fruit and one with round fruit?a. all oblongb. all roundc. ¾ oblong to ¼ roundd. ¾ round to ¼ oblonge. ½ oblong to ½ roundIn cucumbers, orange fruit color (R) is dominant over cream fruit color (r). A cucumber plant homozygous for orange fruit is crossed with a plant homozygous for cream fruit. The F1 are intercrossed to produce the F2. a. Give the genotypes and phenotypes of the parents, the F1, and the F2. b. Give the genotypes and phenotypes of the offspring of a backcross between the F1 and the orange-fruited parent. c. Give the genotypes and phenotypes of a backcross between the F1 and the cream-fruited parent.In pea plants, the allele for round seeds (R) is dominant and the allele for wrinkled seeds (r) is recessive. Under what conditions would we observe wrinkled seeds in a pea plant?A. When the plant has a genotype RRB. When the plant inherits a dominant allele from both parentsC. When the plant inherits a recessive allele from both parentsD. When a plant has a heterozygous allelic pair of the gene for seed shape
- In cucumbers, orange fruit color (R) is dominant over cream fruit color (r). A cucumber plant homozygous for orange fruit is crossed with a plant homozygous for cream fruit. The F1 are intercrossed to produce the F2.a. Give the genotypes and phenotypes of the parents, the F1, and the F2.b. Give the genotypes and phenotypes of the offspring of a backcrossbetween the F1 and the orange-fruited parent.c. Give the genotypes and phenotypes of a backcross between the F1 and the cream-fruited parentIn peas, tall is dominant over dwarf. If a plant homozygous for tall is crossed with one homozygous for dwarf : a. What will be the genotype(s) (use the initial of your last name) and phenotype (s) of the F1 plants? b. If the F1 is grown the next season, predict the possible genotypes and phenotypes. c. If you cross the F1 to the tall parent, what phenotype will result of the cross? What will be the ratio of the genotype? d. If you cross the F1 to the short parent, what phenotype will result of the cross? What will be the ratio of the genotype?Imagine that you are performing a cross involving seed color in garden pea plants. What traits would you expect to observe in the F1 offspring if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.a. only yellow-green seedsb. only yellow seedsc. 1:1 yellow seeds:green seedsd. 1:3 green seeds:yellow seeds