Assume that no crossing-over takes place. Sketch out cells that would be present in each of the following stages and draw out only one pair of chromosomes showing the height locus. Tell the number of "" alleles present per cell from an F, tall plant in the following conditions. G1 G2 Anaphase of mitosis Prophase I of meiosis Metaphase Il of meiosis (consider all cells present in the process) An F, tall plant's gametes at the end of meiosis II (just from one starting germ cell),

Assume that no crossing-over takes place. Sketch out cells that would be present in each of the following stages and draw out only one pair of chromosomes showing the height locus. Tell the number of "" alleles present per cell from an F, tall plant in the following conditions. G1 G2 Anaphase of mitosis Prophase I of meiosis Metaphase Il of meiosis (consider all cells present in the process) An F, tall plant's gametes at the end of meiosis II (just from one starting germ cell),

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 7RQ: Imagine you are performing a cross involving seed color in garden pea plants. What Fi offspring...

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Several alleles affect traits of roses, such as plant form and bud shape. Alleles of one gene govern whether a plant will be a climber (dominant) or shrubby (recessive). All F1 offspring from a cross between a true-breeding climber and a shrubby plant are climbers. If an F1 plant is crossed with a shrubby plant, about 50 percent of the offspring will be shrubby; 50 percent will be climbers. Using symbols A and a for the dominant and recessive alleles, make a Punnett- square diagram of the expected genotypes and phenotypes the cross between the F1 offspring and the shrubby plant.
Imagine you are performing a cross involving seed color in garden pea plants. What Fi offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green. 100 percent yellow-green seeds 100 percent yellow seeds 50 percent yellow, 50 percent green seeds 25 percent green, 75 percent yellow seeds
In cats, the genotype AA produces tabby fur color; Aa is also a tabby, and aa is black. Another gene at a different locus is epistatic to the gene for fur color. When present in its dominant W form (WW or Ww), this gene blocks the formation of fur color and all the offspring are white; ww individuals develop normal fur color. What fur colors, and in what proportions, would you expect from the cross AaWw Aa Ww?
A heterozygous individual has a _______ for a trait being studied. a. pair of identical alleles b. pair of nonidentical alleles c. haploid condition, in genetic terms
Two pairs of traits are segregating in a cross. Two parents produce 156 progeny that fall into 4 phenotypes. The numbers of offspring in the 4 phenotypes are 89, 31, 28, and 8. What are the genotypes of the two parents?
6. In corn plants, a dominant allele I inhibits kernel color, while the recessive allele i permits color when homozygous. At a different locus, the dominant gene P causes purple kernel color while the homozygous recessive pp causes red kernels. If a plant that is heterozygous at both loci is crossed with a plant that has red kernels, what will be the phenotypic ratio of the offsprings?
4. Albinism is lethal in plants, but many plants produce albino offspring. If albino plants C always die before reproducing, how does albinism persist? Migh ne 5. Mendel crossed pea plants producing round seeds with those producing wrinkled seeds. Of 7,324 F2 seeds, 5,464 were round, and 1,860 were wrinkled. Using the symbols W and w for the alleles, (a) symbolize the original P₁ cross; Slover don pet (b) determine the parental gametes; 69 (c) show the F₁ offspring; (d) show a cross between two F₁ plants; dong berbella" 10. Jogolų ar preu 39 woy Your Mirb & ever ascohes berloste di ritod 8 201 artW.20 meylo evit bins tight pdchse sent sitt 10 euogysomod Ceadolise borbeis blirib o svad Jism adoles Parl (e) symbolize the F₁ gametes; and, odb seit (f) summarize the expected F2 results for phenotypes, genotypes and phenotype ratios. mun 100 3161 16 gr nation ritiw nam A (6) His neblinks Sylimstedt phow yd showenis uby sloy 6 or be 160 (0) endonce 100 to eno elouosis na (b) wari hot…
1. Use the following information to answer the question: Parental cross is RrYy x RrYy Seed Shapes are R-round, r-wrinkled Seed colors are Y-yellow, y-green Based on the information given, what is the phenotype ratio of the offspring of this cross? 2. A pea plant heterozygous for height and seed color (TtYy) is crossed with a pea plant heterozygous for height but homozygous recessive for seed color (Ttyy). If 80 offspring are produced, how many are expected to be tall and have yellow seeds? 3. What is the chromosome theory of inheritance? How does this theory explain Mendel's results? 4. A cross between two organisms heterozygous for two different genes (AaBb) results in a 9:3:3:1 phenotype ratio among the offspring. Is the offspring's genotype ratio the same? Explain your answer.…
8. An insect from a strain breeding true for white eyes (RRww) was crossed to an insect from a strain breeding true for cream eye (rrWW). The F1s all had red eyes. o The Fls were intercrossed to produce an F2 generation that consisted of 175 red- eyed:62 cream:81 white eyed. A sqyT * O qyT ( 0 sqy x 0 sqyT (b i. Provide the genetics of inheritance of this trait. ii. Provide the genotypes for the F1s and F2s of this cross. boold B sqyt dirwydad a ot drid svag sqyt boold a sy diw mow A 8 oyd zodio ad bas boold A sayt zad ono dist ori ed of misls nom tertib 9. In wild sunflowers, populations occur that are either yellow flowers (wild type) or white flowers. One variety of true breeding white flowered plants was crossed to another pure strain of white flowered plant. The resulting F1 progeny were yellow flowered plants. When the F1 progeny were intercrossed, the offspring were 56 yellow flowered and 44 white flowered. From the results of these crosses, how many genes control the flower…
7. In pea plants, inflated pod is governed by a completely dominant gene and a constricted pod by a recessive gene. Another independently segregating dominant gene produces green pod while recessive gene produces yellow pod. Give the genotypes of the parents in each of the crosses given below. Phenotypes of Offspring Inflated yellow Constricted yellow Parental Phenotypes Parental genotypes Inflated groen Constricted Green 7.1. inflated green x inflated yellow 58 62 18 22 7.2. constricted green x constricted green 56 18 7.3 inflated yellow x inflated yellow 64 20 74. inflated gr green x 36 38 inflated yellow 7.5. inflated green x inflated green 178 62 58 22
2. The height of a wheat plant is determined by several genes. In a variety the minimum size is 12 inches and the maximum is 24 inches. 12-inch plants were crossed with 18-inch plants, and produced an 18-inch F1. The F1 was allowed to cross each other, and an F2 was obtained in which the 12 and 24 inch plants were obtained with a frequency of 2/8195. How much does each ALELO contribute to the size of the plant? Select one: a. 3 inchesb. 2 inchesc. 1 inch
3. In sesame plants, the one-pod condition (P) is dominant to the three-pod condition (p), and normal leaf (L) is dominant to wrinkled leaf (I). Pod type and leaf type are inherited independently. Determine the genotypes for the two parents for all possible matings producing the following offspring: 318 one-pod normal, 98 one-pod wrinkled b. а. 323 three-pod normal, 106 three-pod wrinkled 401 one-pod normal d. C. 150 one-pod normal, 147 one-pod wrinkled, 51 three-pod normal, 48 three-pod wrinkled 223 one-pod normal, 72 one-pod wrinkled, 76 three-pod normal, 27 е. three-pod wrinkled