°In a flock of chickens, rose comb is dominant over the single comb. Approximately 60% of the chickens in the flock have rose comb, while 40% have a single comb. Determine the expected frequency of: a. q2 b. q c. p d. p2 e. 2pq
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°In a flock of chickens, rose comb is dominant over the single comb.
Approximately 60% of the chickens in the flock have rose comb, while
40% have a single comb. Determine the expected frequency of:
a. q2
b. q
c. p
d. p2
e. 2pq
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- Discuss briefly how pure lines are created in animal husbandry. (Please refer to XII NCERT)1. Fruit weight is controlled by 4 gene pairs. The homozygous dominant weighs 200 g while the homozygous recessive weighs 80 g. Assume that the alleles have equal contribution and have cumulative effects. The F1 and F2 of the two parents below were studied. Parent 1 Parent 2 BIBIB2B2B3B36464 х blbb262ьзьзв4B4 a. Compute for the frequencies of the different individuals in the F2. b. Provide the phenotypes of the F2 and their frequencies.1. The following table gives data for the frequency of genotypes in a population of sunflower plants from a coastal sage scrub community over the course of 50 generations. Gene products of the A allele produce stems without hairs, while gene products of the a allele produce stems with short hairs but flowers with many infertile stamens, and the a' allele produces stems with dense hairs and flowers with all fertile stamens. Note that it may cost the plants greatly in extra carbon to produce these hairs. At the onset of this survey, an invasive insect species that feeds upon the buds of sunflowers had been accidentally introduced into the habitat of this plant population. This insect makes its living by ascending the stems of herbaceous plants rather than landing upon the flower stalks or stems. Thus, dense hairs would impede the ability of this insect to reach the buds. Interpret the results of the data and explain how natural selection might be driving the genotype frequencies in this…
- Plant height is controlled by 5 gene pairs. The homozygous dominant is 200 cm tall while the homozygous recessive exhibits 80 cm height. Assume that the alleles have equal contribution and have cumulative effects. The F1 and F2 of the two parents below were studied. Parent 1 Parent 2 DID,D2D2D3D3dąd, dsds dıdıd2d2d3d3DąD4 D5D5 a. Compute for the contribution of the dominant allele. b. Compute for the height of parent 1 and parent 2. Provide the genotype and phenotype of the F1. d. Compute for the frequencies of the different individuals in the F2 using the Pascal's triangle. e. Provide the phenotypes of the F2 and their frequencies. С.> NEXT A BOOKMARK Question 23/28 According to the probability of the pea plant offspring in chart 2, what percentage of the offspring will be yellow in color? Use the diagrams below to answer the questions that follow. 23 Pea Plants Chart 1 A 5% Punnett Square B) 19% с) 30% Aa Aa D 25% Aa A a E) 75% Chart 2 AaBb x AaBb AB Ab aB ab Key AB AABB AABB Ab AABB AABB AaBb AA - Green BB - Smooth AAbb AaBb Aabb AABB AaBb aa - Yellow aB AaBb aaBB aaBb bb - Rough ab Aabb aaBb aabbFigure 19-16 shows the results of a QTL fine-mapping experiment. Which gene would be implicated as controlling fruit weight if the mean fruit weight for each linewas as follows?Line Fruit weight (g)1 181.42 169.33 170.74 171.25 171.46 182.27 180.68 180.79 181.810 169.3
- CH 1-4 X ← → C Maya X Credibi X app.wizer.me/learn/00E0A8 wizer.TIE a Maya S x BW x BW To-do X Assign x b M Dashb X BB x BW Figura X Figurat X A chicken breeder has chickens that are white, black, or speckled. Speckled chickens have both black and white feathers. The allele for white feathers is (W). The allele for black feathers is (B). Determine the genotypes of the rooster and hen that would breed the greatest percentage of speckled chickens. BW x WW Dashboard Incomp X Interac X STILCI GIESS LUUC BB x WW + with white (W). The heterozygous phenotype is brown and white V < ☆ GOIf 20% of inactive controls had been misclassified as active? f 10 % of inactive cases had been misclassified as active?From an agricultural point of view, discuss the advantages and disadvantagesof selective breeding. It is common for plant breeders to take two different, highly inbred strains, which are the product of many generations of selective breeding, and cross them to make hybrids. How does this approach overcome some of the disadvantages of selective breeding?
- Explain the possible reasons for the observed differences in the sample means. Account for the differences in the sample means of P1 and P2. Similarly, account for the differences in the sample means of the F1 and F2. Compare the difference in the parental generations with that in the filial generations.First part: determine heritability given below values. Second part: given the calculated values, which trait would you select for to increase the frequency of resistant snails in the fewest number of generations and why?”You are examining heritability of traits implicated in disease resistance/avoidance in snails. Given the values below determine heritability. Trait VG VE VP H2 A. Level of oxidative molecules in the blood 5.33 0.65 B. Phototaxis toward dark habitat, which reduces exposure to parasites 1.36 4.72 C. Presences of proteins implicated in parasite recognition in the blood 4.26 1.63 You are examining heritability of traits implicated in disease resistance/avoidance in snails. Given the heritability values you calculated above, which trait would you select for to increase the frequency of resistant snails in the fewest number of generations and why?