Consider a one-locus system of simple dominance where the presence of at least one G allele results in a green plant, while a genotype of g/g results in a white plant. If a test cross between a green plant of unknown genotype and a white plant yielded 0% white offspring, what does this tell you about the genotype of the parental green plant? G/E G/G Not enough information g/g

Consider a one-locus system of simple dominance where the presence of at least one G allele results in a green plant, while a genotype of g/g results in a white plant. If a test cross between a green plant of unknown genotype and a white plant yielded 0% white offspring, what does this tell you about the genotype of the parental green plant? G/E G/G Not enough information g/g

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter3: Transmission Of Genes From Generation To Generation

Section: Chapter Questions

Problem 17QP

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Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?
In sweet pea plant, an allele for purple flowers (P) is dominant when paired with a recessive allele for red flowers (p). An allele for long pollen grains (L) is dominant when paired with a recessive allele for round pollen grain (l). Bateson and Punnett crossed a plant having purple flowers/long pollen grains with one having white/flowers/round pollen grains. All F1 offspring had purple flowers and long pollen grains. Among the F2 generation, the researchers observed the following phenotypes: 296 purple flowers/long pollen grains 19 purple flowers/round pollen grains 27 red flowers/long pollen grains 85 red flowers/round pollen grains What is the best explanation for these results?
Imagine that you are performing a cross involving seed texture in garden pea plants. You cross true-breeding round and wrinkled parents to obtain F1 offspring. Which of the following experimental results in terms of numbers of plants are closest to what you expect in the F2 progeny? a. 8lOroundseeds b. 8lOwrinkledseeds c. 405:395 round seeds:wrinkled seeds d. 610:190 round seeds:wrinkled seeds
A pea plant is heterozygous for both pod shape and color. I is the allele for dominant, inflated pod; i is the allele for recessive, constricted pod. G is the allele for dominant, green pod; g is the allele for recessive, yellow color characteristic. Suppose this plant is crossed with a homozygous pea with inflated, green pod, what will be the possible genotype of the offspring? Construct the punnet square, then identify the following: 1. Parents’ genes?2. Parents’ traits?3. Genes (genotype)?4. Shape, color? (phenotype)?5. Genotypic ratio?6. Phenotypic ratio?
Do a punnet square to find the possible genotypes and phenotypes of the F1 generation when a plant that is homozygous recessive for pod color and heterozygous for pea shape is crossed with a plant that is heterozygous for pod color and homozygous dominant for pea shape. Dominant for pod color = G (green) Recessive for pod color = g (yellow) Dominant for pea shape = R (round) Recessive for pea shape = r (wrinkled) P1: GG X Rr Gg X RR
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In snapdragons, red flower color is incompletely dominant over white. Cross 2 heterozygous pink flowers. What is the phenotypic ratio?
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A researcher at ASU is studying the exotic Unicorn Fairy plant. The plant has three genes of interest with the dominant alleles being T-tall, H=hairy leaves and P=purple flowers. The three genes are located in different chromosomes. A trihybrid plant is crossed with a plant that is heterozygous for T and homozygous recessive for the other two genes. What is the probability of getting offspring that is tall, has hairy leaves and white flowers? 9/64 5/8 8/64 O 3/64 O 3/16
In certain plants, tall is dominant to short. If a heterozygous plant is crossed with a homozygous tall plant, what is the probability that the offspring will be short? 1 0 1 ½ ¼
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