6). Two T4 phage with genotypes ABC and abc are crossed. The progeny have the genotypes listed below. Genotype ABC abc ABC abC aBC Abc aBc AbC # of progeny 300 310 70 80 10 20 100 110 1. A and a are alleles of the same gene and the same for b and c. How many genes are recombining here? 2. What is the correct order of the sites? 3. What are the map distances?
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- 1. Choose the phrase from the right column that best fitsthe term in the left column.a. cytoplasmicsegregation1. transmission of genes through maternalgamete onlyb. heteroplasmic 2. cell that has mtDNAs or cpDNAs all of onegenotypec. homoplasmic 3. having gametes of similar sized. maternalinheritance4. a cell with a mixture of different mtDNAsgenerates a daughter cell with only one kinde. uniparentalinheritance5. a specific fraction of wild-type organellarDNAs is required for a wild-type phenotypef. isogamous 6. cell with mtDNAs or cpDNAs with differentgenotypesg. threshold effect 7. transmission of genes through either amaternal or a paternal gamete, but not both11. Shown below are the offspring of the testcross qr/q +r+ X q r/q r. Which groups are in the recombinant class? q+r and qr+ q+r+ and qr+ qr and qr+ q+r+ and qr30*_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 Air
- 30*_SP23 - General Biology I (for majo us page Ö A 3:1 phenotypic ratio will occur when which of the following crosses is done? Select one: O a. Ttx Tt O b. O c. O d. O e. O f. GgTt x GgTt GGtt x ggTT GGTT x ggtt TT x tt tt x Tt tt x tt Oh. TT x Tt Oi. TT x TT g. O g. 000 MacBook Air1) Using the diagram below, sketch in the pattern of bands you would expect to see after digesting the DNA of the TT, Tt and tt genotypes of the TAS2R38 gene. Use the Base Pair Standards on the left of the diagram as a reference in drawing the positions of the bands. Base Pair TASTER GENO TYPE Standards (Base Pairs) TT Tt tt 500 400 300 200 100 503. An F* strain, marked at 10 loci, gives rise spontaneously to Hfr progeny whenever the F factor becomes incorporated into the chromosome of the F* strain. The F factor can integrate into the circular chromosome at many points, so that the resulting Hfr strains transfer the genetic markers in different orders. For any Hfr strain, the order of markers entering a recipient cell can be determined by interrupted mating experiments. From the following data for several Hfr strains derived from the same F* strain, determine the order of markers in the F* strain. ww wwww Hfr Strain Markers Donated in Order 1 -Z-H-E-R> – 0-K-S-R –> – K-O-W-I > – Z-T-I-W > 4 – H-Z-T-I>
- E. coli cells are simultaneously infected with two strains of phage λ. One strain has a mutant host range, is temperature sensitive, and produces clear plaques (genotype h st c); another strain carries the wildtype alleles (genotype h+ st+ c+). Progeny phages are collected from the lysed cells and are plated on bacteria. The following numbers of different progeny phages are obtained: Progeny phage genotype Number of plaques h+ c+ st+ 321 h c st 338 h+ c st 26 h c+ st+ 30 h+ c st+ 106 h c+ st 110 h+ c+ st 5 h c st+ 6 a. Determine the order of the three genes on the phage chromosome. b. Determine the map distances between the genes. c. Determine the coefficient of coincidence and the interference30*_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 Air1. A mechanism for equalizing the expression of X-linked genes in males and females of a species. [ Choose ] Conjugation Reciprocal Crosses Transduction Binary Replication Haplotype Interference Transformation Gain of Function Mutation Allelic Series Blending Theory Dosage Compensation Rolling Circle Replication Pleiotropy Coefficient of Coincidence Reciprocal Cross Loss of Function Mutation Synaptonemal Complex Allelic Phase Allele Chiasma Law of Independent Assortment 2. A group of alleles of a gene that show a hierarchy of dominance relationship among them. [ Choose ] Conjugation Reciprocal Crosses Transduction Binary Replication…
- 1) If a person who is AaBb (where A/B are is trans) undergoes recombination. What are the 4 possible outcomes? Which of the 4 are the recombinants and which are nonrecombinantes?34. A donor strain of bacteria with alleles a* b* c* is infected with phages to map the donor chromosome using generalized transduction. The phage lysate from the bacterial cells is collected and used to infect a second strain of bacteria that are a b c. Bacteria with the a* allele are selected, and the percentage of cells with cotransduced b* and c* alleles are recorded. Donor Recipient Selected Cells with allele cotransduced allele (%) a* b* a bc a* 25 b* a' 3c Is gene b or gene c closer to gene a? Explain your reasoning.6. A diploid strain of yeast was made by mating a haploidstrain with a genotype w−, x−, y−, and z− with a haploidstrain of opposite mating type that is wild type for thesefour genes. The diploid strain was phenotypically wildtype. Four different X-ray-induced diploid mutantswith the following phenotypes were produced fromthis diploid yeast strain. Assume a single new mutation is present in each strain.Strain 1 w− x+ y− z+Strain 2 w+ x− y− z−Strain 3 w− x+ y− z−Strain 4 w− x+ y+ z+When these mutant diploid strains of yeast go throughmeiosis, each ascus is found to contain only two viablehaploid spores.a. What kind of mutations were induced by X-rays tomake the listed diploid strains?b. Why did two spores in each ascus die?