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- 2 organisms with genotypes Bb Dd are mated assuming independent assortment of the B and D/d genes write the genotypes of all possible offspring from this cross. Indicate the % of each genotype1) By decomposing the cross, MmNn X Mmnn, into single gene outcomes, the possibility of obtaining a double recessive outcome for the ‘N’ gene is: a) 50%! b) 100! c) 0%! d) 25%! 2) A 16-square Punnett is time-consuming to draw out. Dr. Thompson can easily solve this problem by decomposing her dihybrid crosses into separate monohybrid Punnett squares, which would also be quicker than using a forked line diagram. If so, how many individual monohybrid Punnett squares will she need to draw? a) Four Punnett squares. b) Two Punnet squares. c) One Punnett square. d) Sixteen Punnett squares since there are 16 possible outcomes.2) A 16-square Punnett is time-consuming to draw out. Dr. Thompson can easily solve this problem by decomposing her dihybrid crosses into separate monohybrid Punnett squares, which would also be quicker than using a forked line diagram. If so, how many individual monohybrid Punnett squares will she need to draw? a) Four Punnett squares. b) Two Punnet squares. c) One Punnett square. d) Sixteen Punnett squares since there are 16 possible outcomes.
- 4) The round pea seed allele (R) is dominant, while the wrinkled pea seed allele (r) isrecessive. A heterozygous round-seeded pea plant is crossed with a wrinkle-seeded peaplant. Use a Punnett Square to solve the following: a. Determine the predicted genotype ratio of the offspring. b. Determine the predicted phenotype ratio of the offspring. c. If this cross produced 50 plants, how many plants would you predict would bewrinkle-seeded pea plants? please if punnet square needed write down the P G and F1 also thanksWhat genotypes, and in what frequencies, will be present in the offspring from the following matings? a. AABBaaBB b. AaBbaabb c. AaBBAABb d. AaBbAaBbThe dominant C allele of a gene that controls color in corn produces kernels with color; plants homozygous for a recessive c allele of this gene have colorless or white kernels. What kinds of gametes, and in what proportions, would be produced by the plants in the following crosses? What seed color, and in what proportions, would be expected in the offspring of the crosses? a. CCCc b. Cccc c. CcCc
- Which recombination frequency corresponds to perfect linkage and violates the law of independent assortment? 0 0.25 0.50 0.75In addition to the two genes in problem 4, assume you now study a third independently assorting gene that has the alleles C and c. For each of the following genotypes, indicate what types of gametes will be produced: a. AA BB CC b. Aa BB Cc c. Aa BB cc d. Aa Bb Cc7. If the a and b loci are 20 m.u. apart in humans and anA B / a b woman mates with an a b / a b man, what isthe probability that their first child will be A b / a b?
- I have a vial of F2 offspring resulting from a two-generation cross between true-breeding wildtype females and true-breeding pink-bodied males. I scored F2 phenotypes for a total of 120 flies and obtain the following data: Based on the above observed data in the chart, determine the expected number of flies for the following three scenarios provided in a-c below. Show work for each calculation. 3) The mutant allele is recessive and is located on the X chromosome1) Imagine you discover a new mutant strain of tailless mice. Upon looking closer, you notice that I is only the females who are tailless. In paired matings with tailless females crossed with normalmales, you find that the progeny are always recovered in the following ratios: 1/3 tailless females, 1/3 normal females, 1/3 normal males. a)What is the most likely genotype of the tailless mice? b) Provide a simple explanation for the ratio: 1/3 tailless females, 1/3 normal females, 1/3 normal males.1 Pigeons may exhibit a checkered or plain color pattern. In a series of controlled matings, the following data were obtained.P1 CrossF1 ProgenyCheckered Plain(a) checkered * checkered 36 0(b) checkered * plain 38 0(c) plain * plain 0 35Then F1 offspring were selectively mated with the following results. (The P1 cross giving rise to each F1 pigeon is indicated in parentheses.)F1 : F1 CrossesF2 ProgenyCheckered Plain(d) checkered (a) * plain (c) 34 0(e) checkered (b) * plain (c) 17 14(f) checkered (b) * checkered (b) 28 9(g) checkered (a) * checkered (b) 39 0How are the checkered and plain patterns inherited? Select and assign symbols for the genes involved, and determine the genotypes of the parents and offspring in each cross.