What genotypes would be expected for the offspring from the following matings? What are the phenotypic ratios for each cross? Explain how you came up with this ratio? а. ААB х аaBB b. AaBB x AABb с. АаBb x aabb d. AaBb x AаBb
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- For the mating AaBBDdGg x AabbDdGG, draw the monhybrid punnet squares, one for each of the four genes shown in the cross. Assume that all genes assort independently. What fraction of the offspring would have the phenotype A_B_D_G? What fraction of the offspring would have the phenotype aaB_ddG_?The genotype of F1 individuals in a tetrahybrid cross isAaBbCcDd. Assuming independent assortment of these fourgenes, what are the probabilities that F2 offspring will have thefollowing genotypes?(a) aabbccdd(b) AaBbCcDd(c) AABBCCDD (d) AaBBccDd(e) AaBBCCddUse the product rule to determine the chance of obtaining an offspringwith the genotype Rr Yy from a dihybrid cross between parents withthe genotype Rr Yy.a. ½ c. 1/4b. ¼ d. 1⁄16
- Fruit flies can have straight wings (S) or curly wings (s), and they can have be female XX or male XY. (A) For a standard monohybrid cross (Ss ´ Ss), what proportion of the offspring will have the genotype ss? (Express the proportion as a simple fraction) (B) For the following cross (SsXX ´ SsXY), what proportion of the offspring will have the genotype Ss? (Express the proportion as a simple fraction) (C) What proportion will have the genotype XX? (Express the proportion as a simple fraction) (D) What proportion will have the genotype SsXX? (Express the proportion as a simple fraction)SHOW YOUR WORKAn orange [YR] snap dragon is a result of a cross between a yellow [YY] snap dragon and a red [RR] snap dragon where yellow is incompletely dominant over red. Using a Punnet square, show the cross between a yellow and an orange snap dragons? Find the genotypic and phenotypic of the offspring and it's ratio.In a monohybrid cross AA ´ aa, what proportion of homozygotes is expected among the F2 offspring? In a dihybrid cross AAbb ´ aaBB, what proportion of the F2 offspring is expected to be homozygotic for at least one gene?
- What genotypes would be expected for the offspring from the following matings? What are the phenotypic ratios for each cross? Explain how you came up with this ratio?The genotype of F1 individuals in a tetrahybrid cross isAaBbCcDd. Assuming independent assortment of these fourgenes, what are the probabilities that F2 offspring will have thefollowing genotypes?(a) aabbccdd(b) AaBbCcDd(c) AABBCCDDB. The two rabbits with these corresponding genotypes were mated; CCch X CCh . Do the cross and answer the following questions. How many phenotypes will there be for the offspring? How about the genotypes? What is the percentage of agouti offspring to come out? What is/are the other phenotype/s of the offspring besides agouti?
- please asnwer asap The following are the offspring produced by the cross of AaBBCc X AaBbCC, except: a. AABBCC b. AabbCc c. AaBbCC d. AaBBCcWe have dealt mainly with only two genes, but the sameprinciples hold for more than two genes. Consider thefollowing cross:A/a ; B/b ; C/c ; D/d ; E/e × a/a ; B/b ; c/c ; D/d ; e/ea. What proportion of progeny will phenotypicallyresemble (1) the first parent, (2) the second parent,(3) either parent, and (4) neither parent?b. What proportion of progeny will be genotypically thesame as (1) the first parent, (2) the second parent,(3) either parent, and (4) neither parent?Assume independent assortment.A geneticist crosses two yellow mice with straight hair and obtains the following progeny: 12 yellow, straight 16 yellow, fuzzy 14 gray, straight 112 gray, fuzzya. Provide a genetic explanation for the results and assign genotypes to theparents and progeny of this cross.b. What additional crosses might be carried out to determine if yourexplanation is correct?