Let us recall your understanding of concepts of Mendel’s law of inheritance by predicting the possible offspring on a test cross using a Punnett square: Red tomato fruit (R) is dominant over yellow fruit (r). In a test cross between a homozygous red tomato fruit plant and a tomato plant that has yellow fruit, what would be the genotypes of the parents? Genotype: Phenotype: Questions: a. What are the genotypes of the offspring? b. What are the phenotypes? c. If two of the F1 generation from the above cross were mated, what would be the phenotypes and genotypes of the offspring?

Let us recall your understanding of concepts of Mendel’s law of inheritance by predicting the possible offspring on a test cross using a Punnett square: Red tomato fruit (R) is dominant over yellow fruit (r). In a test cross between a homozygous red tomato fruit plant and a tomato plant that has yellow fruit, what would be the genotypes of the parents? Genotype: Phenotype: Questions: a. What are the genotypes of the offspring? b. What are the phenotypes? c. If two of the F1 generation from the above cross were mated, what would be the phenotypes and genotypes of the offspring?

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Three different genes determine the coat colour of cats. One of the genes controls the black-based coat colour. There are three alleles for black-based coat colour genes with the following order of dominance: black (B) > chocolate (bch) > cinnamon (bc). Two black cats were crossed. The offspring produced were three black kittens and one chocolate kitten. Which of the following rows identifies the possible genotype(s) of the parents? Select one: a. Parent 1 Parent 2 Bbch Bbch b. Parent 1 Parent 2 Bbch Bbc or Bbch c. Parent 1 Parent 2 Bbc Bbch d. Parent 1 Parent 2 B__ Bbch
X B English (United States) $ *In corn a cross is made between two pure breeding lines: red dwarf x green tall. The F1 was light red and tall. The F2 consisted of the following: IU 4 C 15 green dwarf Give a concise genetic hypothesis for the inheritance of each trait (include number of genes, number of alleles and dominance relations between alleles). a. Color b. Stature % 96 light red, tall 50 red, tall 5 45 green, tall 31 light red, dwarf 19 red, dwarf A tv ^ 6 1 MacBook Pro E V & 7 * Focus E ER 8 9 E
Given that 5 phenotypes of B, R, Y, G, and W are possible for a trait, the results of crossing parents of unknown genotypes and known phenotypes are shown below. Each percentage represents the percent of progeny with each phenotype. Similar to how the alleles A, B, and O may result in four phenotypes due to combination of codominance and dominance. What is the likely inheritance model created from a combination of different types of dominances? G x G → 100% G G x R → 50% G, 50% R G x B → 40% B, 30% R, 20% G, 10% Y G x W → 25% G, 75% R G x Y → 50% G, 50% Y R x B → 50% R, 50% B R x W → 10% B, 5% R, 50% W, 25% G, 10% Y R x Y → 60% B, 40% Y R x R → 100% R B x W → 75% W, 12.5% B, 12.5% Y B x Y → 40% B, 20% W, 40% Y B x B → 40% B, 22.5% W, 12.5% R, 22.5% Y, 7.5% G W x Y → 60% Y, 40% W W x W → 100% W Y x Y → 100% Y
A cross is performed between a pure-breeding pea plant with round and yellow seeds and a pure-breeding pea plant with wrinkled and green seeds. All F1 progeny have round and yellow seeds. The F1 plants are self-crossed. The following results are observed in the resultant F2 generation: 65 round and yellow, 42 round and green, 50 wrinkled and yellow, and 45 wrinkled and green. Use a Chi Square analysis to determine whether these traits follow Mendel’s law of independent assortment. Show all calculations
Three different genes determine the coat colour of cats. One of the genes controls the black-based coat colour. There are three alleles for black-based coat colour genes with the following order of dominance: black (B) > chocolate (bch) > cinnamon (bc). Two black cats were crossed. The offspring produced were three black kittens and one chocolate kitten. Which of the following rows identifies the possible genotype(s) of the parents? Select one: a. Parent 1 Parent 2 Bbch Bbch b. Parent 1 Parent 2 Bbch Bbc or Bbch c. Parent 1 Parent 2 Bbc Bbch d. Parent 1 Parent 2 B__ Bbch
Which of the following statements is true about the molecular basis of Mendel's second law? OThe random attachment of the sister chromatids and the split of them into different daughter cells during the second round of cell division in Meiosis ensure Mendel's second law of independent assortment of alleles. OThe random attachment of the sister chromatids and the split of them into different daughter cells during the first round of cell division in Meiosis ensure Mendel's 2nd law. O The molecular basis of independent assortment of alleles is the segregation of sister chromatids during the second round of cell division in Meiosis. O The molecular basis of independent assortment of alleles is the segregation of homologous chromosomes during the second round of cell division in Meiosis. O The molecular basis of independent assortment of alleles is the segregation of homologous chromosomes during the first round of cell division in Meiosis.
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In a dihybrid cross (2 sets of alleles, independently assorted) each parent (heterozygous for both traits) can have 4 combinations of alleles in their gametes), so to calculate the odds for inheritance of particular genetic combinations, we must draw out 16 squares. In the case of our purple/yellow and starchy/sweet corn kernels, we can calculate the odds of the possible phenotypes. Purple & starchy: purple & sweet: yellow & starchy: yellow & sweet, can be calculated as O 9:2:2:3 9:3;3;1 O 5:4:4:3
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Consider an animal with genotype F/f. The possible gametes produced by this individual may be ½ F and ½ f. Choose the correct answer below. The explanation for the possible gametes produced is Mendel’s first law, of equal segregation. The explanation for the possible gametes produced is Mendel’s second law, of independent assortment. The explanation for the possible gametes produced is BOTH Mendel’s first law, of equal segregation AND Mendel’s second law, of independent assortment. The explanation for the possible gametes produced is NEITHER Mendel’s first law, of equal segregation NOR Mendel’s second law, of independent assortment.