You have the following data: Daily milk yield records of close relatives of a bull used to sire F1s: 24.4, 19.8, 23.0, 22.6, 20.2 kg, Daily milk yield records for cows: 18.1, 20.4, 17.5, 16.2, 25.2, 14.2 kg, Daily milk yield records for F1s: 31.0, 24.6, 25.4, 32.7, 26.3 kg. Calculate the heterosis (hybrid vigour) for this trait
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- What is h2 based on both sire and dams information, if σe2 = 380, σdams2 = 16 and σsires2 = 24 when the population structure had 12 offspring per sire with 3 from each mating?In a herd of dairy cows the narrow-sense heritability for milk protein content is 0.76, and for milk butterfat it is 0.82. The correlation coefficient between milk protein content and butterfat is 0.91. If the farmer selects for cows producing more butterfat in their milk, what will be the most likely effect on milk protein content in the next generation?A corn breeder wishes to improve yield. As part of their work, the narrow-sense heritability for corn yield is calculated to be 0.3. If the average yield in the starting population is 400 and the breeder selects for breeding plants with an average yield of 500, what will be the expected average yield among the offspring of the selected plants? A. 530 B. 330 C. 130 D. 430 E. 230
- is it desirable to upgrade our Philippine Carabao with Murrah/Bulgarian Buffalo to improve milk yield? Explain briefly.draw a punnett square, both parents are mixed hybrids, name the 4 possible offspring and the expected ration.A graduate student is studying a population of bluebonnets along a roadside. The plants in this population are genetically variable. She counts the seeds produced by each of 100 plants and measures the mean and variance of seed number. The variance is 20. Selecting one plant, the student takes cuttings from it and cultivates them in a greenhouse, eventually producing many genetically identical clones of the same plant. She then transplants these clones into the roadside population, allows them to grow for one year, and then counts the seeds produced by each of the cloned plants. The student finds that the variance in seed number among these cloned plants is 5. From the phenotypic variances of the genetically variable and the genetically identical plants, she calculates the broad-sense heritability. a. What is the broad-sense heritability of seed number for the roadside population of bluebonnets?
- *You are looking at the heritability of litter size at weaning in pigs (17%) *The herd average for this trait is 10 piglets per litter at weaning *When looking at an individual Sow, she has 12 piglets per litter at weaning Calculate the following: -What is the Estimated Breeding Value of the Sow -Determine the Sows Expected Progeny Difference ***Make sure to enter your answers using numbers & use decimals when necessary*** The EBV of the sow is ______________________more pigs per litter then the herd average. Therefore, the sows progeny can be expected to have ______________more pigs per litter then the herd average.What is the chi-square value of the pumpkin population? round up and use four decimal points After doing some crosses and genotyping some individuals, you determined that the number of individuals homozygous dominant for the largest pumpkin allele is 98, 80 are heterozygous for medium size, and 20 are homozygous recessive for small size.Cross: grey body, normal wings (F1 population) x black body, vestigial wings (true breeding) b, vg+ x b, vg b+,vg b, vg Offspring: black body, normal wing = 1418 grey body, vestigial wing = 1294 black body, vestigial wing = 241 grey body, normal wing = 283 Calculate map distance between b and vg.
- The variance for weight in a particular herd of cattle is 484 pounds2.The mean weight is 562 pounds. How heavy would an animal haveto be if it was in the top 2.5% of the herd? The bottom 0.13%?Watermelon Genotypic and Phenotypic Ratio Practice Read the information below. Determine the ratios for phenotype and genotype of each Punnett Square.You may use the example from the Punnett Square worksheet as a guide.A genetic engineer is going to cross two watermelon plants to produce seeds for spring planting. He is breeding for size and wants to have many watermelons with the phenotype for long shape as possible. In watermelons, the allele for short shape is (S) is dominant to the allele for long shape. Determine the Genotypic ratios and phenotypic ratios for each Punnett square. Which cross would yield the highest number of long watermelons? Please make sure to write legibly to determine the capital “S” vs the lowercase “s” 1. SS x SS 2. SS x ss 3. SS x Ss 4. Ss x ss 5. Ss x ss 6. Ss x SsYou are studying a population of giraffes. In this population, one gene (G) controls spot color in giraffes, which shows incomplete dominance. Individuals with white spots are homozygous gg, individuals with brown spots are homozygous GG, and heterozygotes have orange spots (Gg). You observe 25 white-spotted giraffes, 15 orange-spotted giraffes, and 22 brown-spotted giraffes. Calculate the observed allele frequencies, using p for the frequency of allele G, and the expected number of giraffes of each phenotype assuming Hardy-Weinberg Equilibrium (do not do the entire chi-square calculation!). For frequencies, report four positions after the decimal. For expected numbers, report two positions after the decimal. p = q = Expected number of orange-spotted = Expected number of brown-spotted = Expected number of white-spotted =