Ch. 13-3 Refer to problem 2. Determine the predicted genotype frequencies among the offspring of the following crosses:a. AABB × aaBB b. AaBB × AABb c. AaBb × aabb d. AaBb × AaBb
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Ch. 13-3
Refer to problem 2. Determine the predicted genotype frequencies among the offspring of the following crosses:
a. AABB × aaBB b. AaBB × AABb c. AaBb × aabb d. AaBb × AaBb
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- Ch. 13-9 Red-flowering snapdragons are homozygous for allele R1 . White-flowering snapdragons are homozygous for a different allele (R2 ). Heterozygous plants (R1R2 ) bear pink flowers. What phenotypes should appear among first-generation offspring of the crosses listed? What are the expected proportions for each phenotype?a. R1R1 × R1R2 b. R1R1 × R2R2 c. R1R2 × R1R2 d. R1R2 × R2R230*_SP23 - General Biology I (for maj s page A 1:1 phenotypic ratio will occur when which of the following crosses is done? Select one: O a. Tt x Tt b. TT x tt O c. TTx TT O d. TTx Tt O e. tt x tt O f. tt x Tt O g. GgTt x GgTt h. GGTT x ggtt GGtt x ggTT O i. MacBook Air1) What is the pure-breeding (or true-breeding) strain or organism?
- . a. A mouse cross A/a ⋅ B/b × a/a ⋅ b/b is made, and inthe progeny there are25% A/a ⋅ B/b, 25% a/a ⋅ b/b,25% A/a ⋅ b/b, 25% a/a ⋅ B/bExplain these proportions with the aid of simplifiedmeiosis diagrams.b. A mouse cross C/c ⋅ D/d × c/c ⋅ d/d is made, and inthe progeny there are45% C/c ⋅ d/d, 45% c/c ⋅ D/d,5% c/c ⋅ d/d, 5% C/c ⋅ D/dExplain these proportions with the aid of simplifiedmeiosis diagrams.30*_SP23 - General Biology I (for majors page A 9:3:3:1 phenotypic ratio will occur when which of the following crosses is done? Select one: O a. Tt x Tt O b. TTx TT O c. TT x tt d. GGTT x ggtt O e. tt x Tt O f. GgTt x GgTt O g. GGtt x ggTT Oh. tt x tt Oi. TTx Tt 20 000 000 MacBook AirCh. 14-9 Mutations in the genes for clotting factor VIII and IX cause hemophilia A and B, respectively. A woman may be heterozygous for mutations in both genes, with a mutated factor VIII allele on one X chromosome, and a mutated factor IX allele on the other. All of her sons should have either hemophilia A or B. However, on rare occasions, one of these women gives birth to a son who does not have hemophilia, and his one X chromosome does not have either mutated allele. Explain.
- Ch. 13-4 For each genotype listed, what allele combinations will occur in gametes?a. AABBCC b. AaBBcc c. AaBBCc d. AaBbCc4:12 5. Set up the punnett square for each of the crosses listed below. The characteristic being studied is seed texture round seeds (dominant) and wrinkled seeds (recessive). Rr x rr Rr x Rr RR x Rr Tall: % Complete the punnett squares below using the given information. 6. A TT (tall) plant is crossed with a tt (short plant). Which trait is dominant? Give the expected probabilities for each genotype and phenotype. TT: Tt: Short: Previous % % tt: What percentage of the offspring would you expect be round? Wrinkled? ZOOM + What percentage of the offspring would you expect be round?_____ Wrinkled? What percentage of the offspring would you expect be round? Wrinkled? % 7. A hybrid tall (Tt) plant is crossed with a hybrid (Tt) plant. Give the expected probabilities for each genotype. phenotype. wvm.instructure.comRefer to problem 2. Determine the predicted genotype frequencies among the offspring of the following crosses: a. AABB × aaBB c. AaBb × aabb b. AaBB × AABb d. AaBb × AaBb
- 20-21. Genes A and B are linked, 20 map units apart. 20. In a mating between an Ab/aB and ab/ab, what is the likelihood of AB/ab progeny? а. О b. 0.10 С. 0.20 d. 0.40 е. 0.801 9 11 10 Study the pedigree diagram of a sex- linked trait above and answer the following questions: What is the genotype of individual #5? [ Select ] а. XRXR d. XRY b. XRX" c. X"X" What is the genotype of individual #9? [ Select ] а. XRY b. X"Y c. XRX" d. X"X"Practice: 1.) Heterozygous A crosses with Heterozygous A. Calculate the probability of each phenotype being passed down to the offspring. TOTALS: (percent and ratio) A: B: AB: O: 2.) Type O breeds with Type AB TOTALS: (percent and ratio) A: B: AB: O: 3.) Woman has type B (exact genotype unknown). Man has type O. What are the possible blood types of their kids? Is this type possible: A: yes/ no? B: yes/ no? AB: yes/ no? O: yes/ no? 3B.) If the woman has a baby with type AB blood, could the man above be the father? Explain you answer.