2. The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd. Assuming independent assortment of these four genes, what are the probabilities that F2 offspring (AaBbCcDd x AaBbCcDd will have the following genotypes? Show your work using the probability rules.
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![2. The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd. Assuming independent
assortment of these four genes, what are the probabilities that F2 offspring (AaBbCcDd x AaBbCcDd
will have the following genotypes? Show your work using the probability rules.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fccf9e67e-6f40-458b-94fe-7b806871e07d%2Fa0371559-c49c-46b0-8d3b-102aa625b4a1%2F5i5rcj_processed.jpeg&w=3840&q=75)
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- The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd X AaBbCcDd. Assuming independent assortment of these four genes, what are the probabilities that F2 offspring will have the following genotypes? Calculate the probability of each using multiplication and addition rules. Show your work. a. AaBBCCddStill referring to Problem 1, what will be the possible genotypes of offspring from the following matings? With what frequency will each genotype show up? a. AABB aaBB b. AaBB AABb c. AaBb aabb d. AaBb AaBbImagine that you are performing a cross involving seed texture in garden pea plants. You cross true-breeding round and wrinkled parents to obtain F1 offspring. Which of the following experimental results in terms of numbers of plants are closest to what you expect in the F2 progeny? a. 8lOroundseeds b. 8lOwrinkledseeds c. 405:395 round seeds:wrinkled seeds d. 610:190 round seeds:wrinkled seeds
- Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?1) Given the map a15b24c (where 15 and 24 are the respective map distance between the loci) with a coefficient of coincidence of 0.5, how many "abc" pheontype individuals would be observed among 1000 progeny of a test cross of the following: a+c/+b+ 2)A,B,C, and D are genes linked on the same chromosome. Given the following recombination frequencies, what is the gene order? A-B 15%, B-C 26%, C-D 30%, A-C 11%,A-D 19%, and B-D 4%.The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd X AaBbCcDd. Assuming independent assortment of these four genes, what are the probabilities that F2 offspring will have the following genotypes? Calculate the probability of each using multiplication and addition rules. Show your work. a. aabbccdd b. AaBbCcDd c. AaBBCCdd d. Any of the 3 genotypes above
- You have determined that the gene order for three linked genes being studied is A B C. The number of recombinants resulting from crossover between genes A and BC are 44 and 48, respectively, while the double-crossover progeny total 4 and 6. What is the recombination frequency between genes A and B if the total progeny from the cross is 1000? Show all of your work.3) A wild type fruit fly (dihybrid for gray body color and normal wings) is mated with a black fly with vestigial wings. Determine the expected phenotypic ratio resulting from this cross if we initially assume the alleles for these traits are unlinked and exhibit complete dominance. The offspring of the mating described above actually exhibited the following phenotypic ratio: Wild type: 778 Black vestigial: 785 Black normal: 158 Gray vestigial: 162 a) What does the observed phenotypic ratio suggest regarding the alleles for body color and wing shape? b) What could account for the existence of the observed recombinant phenotypes in the ratios shown above? c) Calculate the recombination frequency between the genes for body color and wing shape. What is the relative distance between these alleles on the same chromosome?Consider the following Test Cross results & chromosome map: Test Cross Progeny 525 A B C 500 A+ B+C+ 456 A+ B C 308 A B+C+ 101 A B C+ 100 A+ B+C 2 A+ B C+ 1 A B+C Total Progeny = 1993 1-Based on the above data calculate the expectednumber of Double crossovers (DCOs)? Round answers to the closest whole number.
- F1 hybrid is obtained from the following cross: Parent 1: AB/AB; d/d; E/E Parent 2: ab/ab; D/D; e/e Assume that all genes are sorted independently except for genes A and B, which are tightly linked and show zero recombination. Following a testcross of F1, what proportion of the F2 progeny will be phenotypically like parent 1? O 1/8 O 1/4 O9/64 O 1/16Based on the information you discovered in the previous problem, answer the following:a. A female fruit fly with genotype Tt nn is mated toa male of genotype Tt Nn. What is the probabilitythat any one of their offspring will have normalphenotypes for both characters?b. What phenotypes would you expect among the offspring of this cross? If you obtained 200 progeny, howmany of each phenotypic class would you expect?What are the phenotypes? What is the ratio of those phenotypes? The phenotypes would be: (a) Yellow with smooth (b) Yellow with wrinkled 3:1 Part 2: Data Tables Table 1: Parent Genotypes: Monohybrid Crosses Generation Genotype of Individual #1 Genotype of Individual #2 P Yy Ss P1 Yy Ss P2 Yy ss P3 Yy SS P4 YY SS Table 2: Generation Data Produced by Monohybrid Crosses Generation Possible Offspring Genotypes Possible Offspring Phenotypes Genotype Ratio Phenotype Ratio P yySs P1 yySs P2 Yyss P3 YySS P4 YYSS Part 2: Post-Lab Questions How much genotypic variation do you find in the randomly picked parents of your crosses? How much in the offspring? Pool all of the offspring from your five replicates. How much phenotypic variation do you find? Is the ratio of observed…
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