MONOHYBRID CROSS PROBLEMS 1. In a certain plant, yellow fruit, Y, is dominant to white fruit, y. A heterozygous plant with yellow fruit is crossed with a plant with white fruit. Determine the probable genotypic and phenotypic ratios resulting from this cross. 2. Determine the probable genotypic and phenotypic ratios expected from crossing two heterozygous plants from the cross in the previous question. 3. Assume that brown eyes is dominant to blue eyes. A father who is heterozygous brown eyed and a heterozygous brown eyed mother have children. A) What are genotypes and phenotypes of the offspring? B) What is the probability of them having a blue eyed child?

MONOHYBRID CROSS PROBLEMS 1. In a certain plant, yellow fruit, Y, is dominant to white fruit, y. A heterozygous plant with yellow fruit is crossed with a plant with white fruit. Determine the probable genotypic and phenotypic ratios resulting from this cross. 2. Determine the probable genotypic and phenotypic ratios expected from crossing two heterozygous plants from the cross in the previous question. 3. Assume that brown eyes is dominant to blue eyes. A father who is heterozygous brown eyed and a heterozygous brown eyed mother have children. A) What are genotypes and phenotypes of the offspring? B) What is the probability of them having a blue eyed child?

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 16QP: More Crosses with Pea Plants: The Principle of Independent Assortment Consider the following cross...

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Practice with Crosses. 5. A TT (tall) plant is crossed with a tt (short plant). What percentage of the offspring will be tall? 6. A Tt plant is crossed with a Tt plant. What percentage of the offspring will be short? What percentage is tall? 7. A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR). What percentage of the offspring will be homozygous (RR)? 8. A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the genotypes of the parents? What percentage of the offspring will also be homozygous? I also What is the genotype of all of the offspring? 9. In pea plants purple flowers are dominant to white flowers. If two white flowered plants are cross, what percentage of their offspring will be white flowered? 10. A white flowered plant is crossed with a plant that is heterozygous for the trait. What percentage of the offspring will have puple flowens? 11. Two plants, both heterozygous for the gene that controls…
GENETICS Question; 1. Give the genotypes and its ratio of the dihybrid cross of FIGURE 7. Regarding this problem, you may refer the genotype of the monohybrid cross of pea flower color in Figure 6.
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Monohybrid cross
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the progeny i each seehario. Q4. You conducted an experiment similar to Morgan's fruit fly but you used honey bee instead. You are thus following 2 genes, the wing size Long (L) and short (1) and body color Yellow (Y) and black (y). You crossed YyLI x yyll and obtained 4,000 offspring. You counted the offspring classes and found the following distribution as follows: 1200 YyLl individuals 1190 yyll individuals 800 Yyll individuals 810 yyLl individuals a) what is the phenotype of each class of offspring? b) Which classes are of the parental type and which are the recombinant types? c) What is the recombination frequency between both genes? d) What is the map distance in cM and in map units between both genes? When you counted the offspring, you also collected data on a third gene coding for antenna shape. The gene has 2 alleles in the population, bended antenna (B) and straight antenna (b). You found a distance of 13 cM between the gene for antenna shape and that for wing size, and 24…
Dihybrid cross 2. A tall, purple-flowered pea plant (AaBb) is allowed to self- pollinate(The recessive alleles code for short plants and white flowers). The phenotypic ratio for the resulting offspring is 9:3:3:1. What is the genotype of the plant whose phenotype appeared once out every 16 offspring(the "1" in the 9:3:3:1 ratio?
Practice with Crosses. Show all work! 6. A TT (tall) plant is crossed with a tt (short plant). a. What percentage of the offspring will be tall? 7. A Tt plant is crossed with a Tt plant. a. What percentage of the offspring will be short? 8. A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR). a. What percentage of the offspring will be homozygous (RR)? 9. A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. a. What percentage of the offspring will also be homozygous?
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Monohybrid crosses 1. The following lists represent genotypes at imaginary genetic loci. In each case there may be one or more correct answers - list ALL correct answers.: a. Homozygous dominant Mm NN 00 pp Qq RR b. Homozygous recessive Mm NN oo pp Qq RR c. Genotypes in which dominant allele must show Mm NN 00 pp Qq RR d. Genotypes in which recessive allele must show Mm NN oo pp Qq RR
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I have difficulty understanding heterozygous. Can you help?