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Name: 20-21. Genes A and B are linked, 20 map units apart.20. In a mating b
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Description: 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. Оb. 0.10С. 0.20d. 0.40е. 0.80

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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. 0 b. 0.10 С. 0.20 d. 0.40 е. 0.80

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 17RQ: Assuming no gene linkage, in a dihybrid cross of AABB x aabb with AaBb F1 heterozygotes, what is the...

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Assuming no gene linkage, in a dihybrid cross of AABB x aabb with AaBb F1 heterozygotes, what is the ratio of the F1 gametes (AB, aB, Ab, ab) that will give rise to the F2 offspring? a. 1:1:1:1 b. 1:3:3:1 c. 1:2:2:1 d. 4:3:3:1
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? ab a. 0 b. 0.10 C. 0.20 d. 0.40 e. 0.80 Ab Ab/ab aß aB/ab ARA
26. Green flowers are dominant to yellow flowers in pea plants. Two heterozygous green pea plants are crossed, and 1000 offspring are produced. About how many of the offspring are expected to be yellow? а. О b. 250 d. 750 е. 1000 С. 500 Which of the following techniques are used to amplify DNA sequences? 27. Mitochondria replicate by division Chloroplasts possess DNA distinct form nuclear DNA Mitochondrial inner membranes resemble of prokaryotes I. II. III. d. I and II only а. I only b. II only c. III only e. I, II, and III
Females heterozygous for the recessive second chromosome mutations bw, sp, and cn are mated to a male homozygous for all three mutations. The offspring are as follows: 10 62 bw sp cn \bw sp bw bw + сп 82 + + 361 339 + sp cn 79 sp + + сп 55 + + + 12 total 1000 What is the interference? 1% 1.3% 10% 13.5%
1. Three genes (P, S & T) are arranged on a chromosome with distances as shown in the figure 8.0 6.0 What is the probability of observing a double cross-over between S & T and a single crossover between P & S, assuming no interference? а. 0.0036 b. 0.000023 С. 0.0048 d. 0.000288 е. 0.14
Question 15: Consider the consequence if one of the mutations you tested for complementation was a dominant mutation. You should see that complementation tests could not be used to provide information about dominant mutations. a) If a mutation were dominant how would your interpretation of the phenotype of the diploid be altered? No change would occur v b) How would you test whether any of these trp mutations were dominant? There is no way to test fc V
Choice 2: Black versus orange fur is determined by two alleles an X-linked gene (XⓇ, Xº), Suppose that a black male is mated with an orange female. a) Write the genotypes of the male and female cats. Male: Female: b) What genotypes & phenotypes are expected among the offspring (F1) of these parent cats? c) Suppose that a male and a female from part b mate. What offspring types will they produce?
3-4. Two strains of Neurospora crassa are crossed, one of genotype o'm g* and the other of genotype o m g". All three genes are on the same linkage group, in that particular order. 3. In which octad(s) did crossing over event(s) occur? a. o'm*g* o*m*g* o'm*g¯ o*m*g¯ omīg* om°g* o m¯g¯ o°m¯g¯ b. o'm*g* o`m*g* omīg* om¯g* o°m*g¯ o°m*g¯ o°m¯g¯ omīg c. o'm*g* o*m*g* o'mg¯ o*m¯g¯ om*g* o¯m*g* o m°g¯ o°m°g¯ d. all of the above e. none of the above 4. In which octad(s) did gene conversion event(s) occur? a. om*g* oʻm*g* oʻm*g o'm*g omg* om¯g* om¯g¯ o°m°g¯ b. o'm'g* o'm°g* o`m°g* om°g* o°m°g¯ o°m°g° o°m°g omīg c. O'm*g* o'm*g* o'mīg¯ o'm¯g¯ o'm*g* o°m*g* o m°g¯ o°m¯g¯ d. all of the above e. none of the above
For questions 1-3, consider a pea plant homozygous for tall stems and green seeds crossed with a plant dihybrid for tall stems and yellow seeds.
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4. Familial polydactyly is an autosomal dominant trait that results in extra fingers or toes. An affected woman and a normal man have a normal son. This couple wants to have 4 more children. What is the probability that 3 of the children are polydactyl? а. 0.211 b. 0.047 с. 0.375 d. 0.25 е. 0.422
5 & :56M ******* 24 DIHYBRID CROSSES DRV 0 Stv T alı A @ zladenA 9160p2-id2 bns obidalbaneoviene da II\ MOD YR 21 $59A ... Create a dihybrid cross and determine the expected phenotypic percentages of the offspring of two corn plants both of which are heterozygous for colour and texture (RrTt X RrTt). Don't forget to include clear let statements, and follow the all six steps taught on solving genetics problems. insig moni nellog: bna. zoom