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- Consider a situation where F1 is backcrossed with one of its parental lineage and we obtained A1H1/A2H2 : A2H1/A2H2 : A2H2/A2/H2: A1H2/A2H2 = 295 : 186 : 310 : 209, where A1 and A2 are alleles at a locus and H1 and H2 are alleles at the other locus. What is the recombination (genetic) distance between the two loci in centimorgans? A. 8.9 B. 22.5 C. 18.4 D. 50 E. 39.5In sweet pea plant, an allele for purple flowers (P) is dominant when paired with a recessive allele for red flowers (p). An allele for long pollen grains (L) is dominant when paired with a recessive allele for round pollen grain (l). Bateson and Punnett crossed a plant having purple flowers/long pollen grains with one having white/flowers/round pollen grains. All F1 offspring had purple flowers and long pollen grains. Among the F2 generation, the researchers observed the following phenotypes: 296 purple flowers/long pollen grains 19 purple flowers/round pollen grains 27 red flowers/long pollen grains 85 red flowers/round pollen grains What is the best explanation for these results?A gene has two alleles, E and e. Another gene also has two alleles, T and t. Which of the following correctly shows linkage between the two genes? Group of answer choices ET/et Te/Et Ete/T Ee/tT
- What does codominance mean in genetics? Select one: O a. Both alleles are expressed only when they are homozygous O b. Each allele is both dominant and recessive O c. The alleles are neither dominant nor recessive O d. Both alleles make products that are expressed when present /quiz/attempt.php?attempt=1173673&cmid=3837312&page=13# MacBook ProHere's the cheat-sheet below. tt nontaster (homozygous recessive): single band at 221bp TT taster (homozygous dominant): two bands (177bp and 44bp) Tt taster (heterozygous): 3 bands representing both alleles (221bp, 177bp, 44 bp) MARKER tt nontaster TT taster U D Tt taster U D MARKER PBR322/ U D 100 bp ladder BstNI 1857 bp 929 bp 383 bp 121 bp 221 bp 177 bp 44 bp primer dimer if present) This figure shows you expected results for the 3 possible genotypes. The U is for "undigested', meaning what you see before using the restriction enzyme. The D is for digested. Q8) In the figure above, which was the BETTER ladder to use for this experiment? PBR322/BstNI or the 100 bp ladder?Regarding the analysis of single marker STR results used in forensic science. Tick all the correct statements: o if a suspect's alleles are different from those collected at a crime scene, then the suspect is possibly innocent if a suspect's alleles are identical to those collected at a crime scene, then the suspect is possibly guilty two unrelated individuals could have a similar genetic profile monozygotic twins may have different alleles at an STR locus O if a suspect's alleles are identical to those collected at a crime scene, then the suspect is definitely guilty O O no correct statement O if a suspect's alleles are different from those found at a crime scene, then the suspect is definitely innocent dizygotic twins can have similar alleles at an STR locus monozygotic twins cannot have different alleles at an STR locus dizygotic twins cannot have similar alleles at an STR locus O O
- Phenotype Genotype Wide bands BB medium Bands Bb narrow bands bb Phenotype Genotype Complete Washing WW half washing Ww No washing ww If a raccoon with a wide tail band that washes only some of its food is crossed with a raccoon with a narrow tail band that doesn’t wash any food, what percentage of their offspring would be medium-tailed and washes all its food? Show COMPLETE cross.The white Leghorn breed of chickens is homozygous for the dominant allele C, which produces colored feathers. However, this breed is also homozygous for the dominant allele I of an independently assorting gene that inhibits coloration of the feathers. Consequently, Leghorn chickens have white feathers. The white Wyandotte breed of chickens has neither the allele for color nor the inhibitor of color; it is therefore genotypically cc ii. What are the F2 phenotypes and proportions expected from intercrossing the progeny of a white Leghorn hen and a white Wyandotte rooster?The Turner Kieser Syndrome (or nail patella syndrome) is a dominant human disease (prevalence about 1/100.000), which impairs the normal development of, nails and kneecaps (patella). In the following study the mutant allele for this gene is noted "M" and the wild type allele "m". On the family tree below black symbols (circles for women and squares for men) indicate people suffering from KSS and open symbols represent healthy persons. Moreover, all individuals have been genotyped at the locus controlling blood type ([O] : ii ; [A] : Iª_ ; [B] : /B_ ; [AB] : /A/B) 1 2 Reminder 3 ilB iIB 2 3 O iIB IB iIB 7 O ii iIB IB IA ii ii Z(0) = Log10 6 4 What to conclude from this value of Z ? 5 ilA ilA ii 8 9 probability if linkage probability if independant 10 2 ilB Calculate the LOD-score Z (Logarithm Of Odds) for a genetic distance set to 10 cM (hence a recombination frequency of 0 = 0,1). 11 12 13 = ii iIB ii ii ii iIB IB 14 15 16 Log10 L (0<0,5) L (0=0,5)
- Allele B is a deleterious autosomal dominant. The frequency of affected individuals is 4.0 × 10−6. The reproductive capacity of these individuals is about 30 percentthat of normal individuals. Estimate μ, the rate at whichb mutates to its deleterious allele B. Assume that the frequencies of the alleles are at their equilibrium values.Cystic fibrosis is an autosomal recessive disease characterized by two copies of a mutated CFTR gene. If one in 100 (hypothetical scenario, not reality) people in the United States have cystic fibrosis, calculate the p and q frequency for the normal allele (p) and the mutated allele (q). Based on those calculations, what percentage of individuals would be expected to be homozygous dominant?The fur color gene in rabbits has a dominant allele B with a black phenotype and a recessive allele with a brown phenotype. The rabbit hair length gene has a dominant allele S for short hair, and a long hair recessive allele s. In a cross between a homozygous black-long-hair rabbit with a homozygous brown-short rabbit, what would be the genotype(s) B_s_ v and phenotype(s) [ Select ] of the F1 generation? What would be the genotype(s) [ Select ] and phenotype(s) [ Select ] of the F2 generation?
