How many phenotypes for exoskeleton color are exhibited in the population

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Download The Statistics of Inheritance and more Statistics Lecture notes in PDF only on Docsity! The Statistics of Inheritance How can statistics help predict the traits of offspring? Why? The randomization of alleles from the parents’ genetic material is essential to the survival and evolution of a species. If the combinations of alleles that make up the genetic material in a zygote are truly random, the laws of statistics can be used to predict what traits the offspring will have. This activity starts with a review of Punnett squares, which is one way to make predictions about simple allele combinations. Statistics will then be used to make mathematical predictions about the genotypes of offspring. 1. Consider the beetle species in Model 1. a. How many phenotypes for exoskeleton color are exhibited in the population? What are they? b. How many genotypes for exoskeleton color are exhibited in the population? What are they? 2. According to Model 1, which allele, B or b, is the dominant exoskeleton color allele? Justify your answer with specific evidence from Model 1. 3. The Punnett squares in Model 1 show the possible outcomes for an offspring resulting from the mating of two beetles. a. Which Punnett square shows a cross between two homozygous beetles? b. Which Punnett square shows a cross between a heterozygous beetle and a homozygous recessive beetle? 4. Briefly describe how the genotypes inside of the Punnett squares representing the possible outcomes for an offspring are determined. 5. Complete the Punnett square for cross D in Model 1. Include drawings to show the phenotypes possible for the offspring that would result. 6. Refer to Model 1. a. In which of the crosses is there a 100% chance that the beetle offspring will have a black exoskeleton? b. In which of the crosses is the probability 0.75 that the beetle offspring will have a black exoskeleton? 7. For cross D in Model 1, what is the probability that the beetle offspring will have a Bb genotype? Show a mathematical calculation to support your answer. 8. According to Model 2, what is the probability of selecting a red tile at random from one of the bags illustrated? 9. Imagine you have a classmate who has never had an introduction to statistics in a math course. Explain to that person how the probability of selecting a red tile is determined. Use complete sentences. 10. What is the probability of selecting either a red or blue tile from one of the bags? Show a mathematical equation to support your answer. 11. Consider examples C and D in Model 2. How are the probabilities from examples A and B used to calculate the probability of pulling one tile each from two bags? 12. Calculate the probability of pulling a blue tile from each of two bags identical to those in Model 2. Show a mathematical equation to support your answer. 13. Compare and contrast examples D and E in Model 2. 14. Propose an explanation for why the final probability answer in example E is twice as big as the final probability answer in example D. 15. Consider two six-sided dice. a. Calculate the probability of rolling a “3” on a single die. b. Calculate the probability of rolling a “3” on both dice. c. Calculate the probability of rolling a “3” on the first die and a “4” on the second die. d. Calculate the probability of rolling a “3” and a “4” on the dice. 16. Consider cross B of Model 1. a. What is the probability that the offspring will get a B allele from the male beetle? b. What is the probability that the offspring will get a B allele from the female beetle?

How many phenotypes for exoskeleton color are exhibited in the population?

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Gauthmathier1437

Grade 10 · 2021-07-21

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How many phenotypes for exoskeleton color are exhibited in the population?

Samuel

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Two phenotypes of exoskeleton are exhibited in the population: black and white. According to the information provided, beetles with the black phenotype can either have a BB or a Bb genotype, while beetles with the white exoskeleton have a bb genotype. 

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