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- In biology, what do you think does the garden peas has as a good model for genetic studies? A.) Few offsprings per generation B.) Has several paired characteristics C.) Long generation time D.) Only capanble of self-fertilization5. Flower color is determined by the pathway below. You a crossing a true-breeding white-flowered plant thatcannot produce gene A and a true-breeding white-flowered plant that cannot produce gene B.Gene A Gene BWhite White Purplea. What are the genotypes of the P-generation?b. What are the genotypes and phenotypes of the F1 generation?c. What are the genotypes and phenotypes of the F2 generation? What is the phenotypic ratio?(Purple:White)To avoid self-fertilization in his pea plants, Mendel had toa. spray the plants with a chemical that damaged thepollen.b. remove the anthers from immature flowers.c. grow the plants in a greenhouse that did not containpollinators (e.g., bees).d. do all of the above.
- Which answer below is an example of heterozygous, Plant that expresses incomplete dominance for flower color. A. A plant with lavender white and purple flowers B. A plant with purple flowers C. A plant with lavender flowers D. A plant with purple and white flowersIn pea plants, spherical seeds (S) are dominant to dented seeds (s). In a genetic cross of twoplants that are heterozygous for the seed shape trait,i. Explain the diagram ii. What fraction of the offspring should have spherical seeds? iii. Use punnett square to show your answer. iv. Interpret the results of a Punnett square2) Suppose you have two rose bushes, both with orange flowers. You cross the two plants and are surprised to find that, while most of the resulting plants have orange flowers, some are red and some are yellow. You decide that you like the red flowers best and would like to make more. a. What cross (two colored plants) would you perform to produce the most red plants. b. Your mother decides she would like some of the orange roses. Which cross (two colored plants) would give you the most orange plants?
- 1. What are some possible applications of genetics to plant breeding? 2. Where are genes found? CHOICES : A. CELL B. DNA C. LOCUS D. MITOCHONDRIA 3. Y. The grandfather has hairy-eared son. His son married a girl who gave birth to a boy. What are the chances that his grandson would be hairy eared too? CHOICES: A. 0% B. 25% C. 50% D. 100% Z. Why do you think so? CHOICES: A. Only male is the carrier of the disorder. B. Only female is the carrier of the disorder. C. Both male and female is the carrier of the disorder. D. Neither male nor female is the carrier of the disorder.5. You are handed a mystery pea plant with tall stems and axial flowers and asked to determine its genotype as quickly as possible. You know that the allele for tall stems (T) i dominant to that of the dwarf stems (t) and that allele for axial flowers (A) is dominant to that for terminal flowers (a). (a) What are all the possible genotypes of your mystery plant? (b) Describe the one cross you would do, out of your gardens, to determine the exact genotype of your mystery plant. (c ) While waiting for the results of your cross, you predict the result of each possible genotype listed in part a. How do you do this? Why is this not called "performing a cross"? (d) Explain how the results of your cross and your predictions will help you learn the genotype of your mystery plant.1. An albino man whose parents are both normal marries a woman ome of whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a.Is albinism a dominant or a recessive trait? Explain your answer B. Give genotypes of all the persons involved. C.The couple plans to have more kids. What is the probability of their second child being normal
- 1 Some birds with shorter beaks enter into a population of birds with much longer beaks, resulting in several offspring with in-between sized beaks in the next generation.Mendel's pea plants were a good choice for studying heredity, because: a) They have lots of easily observable traits that vary in an either-or manner. b) Their mating is uncontrollable. c) There are separate male and female plants. d) The plants are incapable of cross-pollination.1. In pea plants, purple flower color is dominant over white flower color. If you had a purple flowered plant, its genotype could be either PP or _______? A. Pp B. pp C. PP 2. To figure out which genotype your purple plant had, you could do a test cross and mate it with a __________ plant? A. White Flower B. Purple Flower 3. If any of the offspring were white, that would tell you that your mystery purple plant had the genotype __________? A. Pp B. PP C. pp