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Q1 The heritability of a trait can vary between -1 and +1. True or false?
Q2 Heritability is estimated based on the slope of a X-Y scatter plot between progeny's values (Y axis) and mid-parental values (X axis). True or false?
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- The broad-sense heritability of a trait is estimated at 0.6. If the total phenotypic variance is estimated at 30.0, what is the genetic variance? 12 18 36 5 9I. Chi-Square Test Phenotype Class Observed Frequency (0) Seed Expected Frequency (E) Deviation d2 d?/E (d=0-E) Corn Tall-normal 26 9 17 289 3.01 (Corn) Rice Tall-wrinkled 26 3 23 529 5.51 (Rice) Mongo Dwarf-normal 25 3 22 256 2.66 (Mongo) Squash Dwarf- 19 3 116 484 5.04 wrinkled (Squash) 16.22 Degree of freedom - 4-1-3 EL X' = S lau -8) 23 G,089 18 %3D X'= 338 Exercise No. 4- Gene Segregation and Interaction 4 What can you conclude based on the value of the computed Chi-square? How can you relate the two principles of Mendel to Chi-Square Values?The mean and variance of Corolla length in two highly strains of tabacco and their progeny are shown in the following table one parent (P1) has a short corolla and the other parent ( P2) have a long corolla calculate the broad sense heritability (H) of Corolla length in the plant Strain. Mean(mm). Variance (mm) P1 short 40.47. 3.12 P2 long. 93.75. 3.87 F1(P1×P2). 63.90. 4.74 F2(F1×F2). 68.72. 47.70
- Why are monozygotic twins who are reared apart so useful in the calculation of heritability? What assumption is being made about their respective environment?What kind of heritability estimates (broad sense or narrow sense) are obtained from human twin studies?Once upon a time there was a population of hippies living in an isolated commune called Gone. They had been there for generations, and all members were homozygous for a gene that gave them a preference for crafting necklaces out of green beads, so that every individual had the genotype GG at this locus. In another isolated commune, called Yonder, was a population of hippies that had a genetic propensity for making necklaces out of yellow beads, and everyone was homozygous for a different allele at the same genetic locus; their genotype was YY. Last year (prior to our current social isolating) everyone repaired their VW buses, and a giant gathering in celebration of the 50th anniversary was held at the Oregon Country Fair. The next few questions will ask you about these two populations that came together at the fair.
- The mean and variance of Corolla length in two highly strains of tabacco and their progeny are shown in the following table and one parent (P1) have a short corolla the other parent (P2) have a long corolla calculate the broad sense heritability (H) corolla length in the plant Strain mean (mm). Variance (mm) P1 short 40.47. 3.12 P2 long. 93.75. 3.87 F1 (P1×P2). 63.90 4.74 F2(F1×F2). 68.72. 47.76ADHD is a highly heritable trait with published broad sense heritability estimates in the range of 0.6- 0.9. Larsson et al. 2014 (doi: 10.1017/S0033291713002493 ) reported the concordance values shown in the table below for pairs of monozygotic (MZ) or dizygotic (DZ) twins with data for male and female pairs shown separately, using data from the Swedish twin register (59,000 twin pairs, born between 1959 and 2001). Male MZ twins Male DZ twins Female MZ twins Female DZ twins 56% 16% 37% 13% Based on the data in this table, does ADHD appear to be more heritable in males or females? Provide one sentence of rationale to support your answer.Punnet square problems A=Codominant; B=Codominant; O=Recessive Mary is homozygous for type A blood. Steve is homozygous for type O blood. If they have children, what are the possible phenotypes and genotypes of their children, and what is the probability of each? Mary and Steve have a son, Brad. Brad’s wife, Samantha is heterozygous for type B blood. If they have children, what are the possible phenotypes and genotypes of their children, and what is the probability of each? Stella loves roses and decides to cross her red rose with her white rose. All of the resulting offspring of this cross are pink roses. What can you say about the red and white alleles as a result of this cross? Stella decides to cross two of the pink roses. What are the possible genotypes and phenotypes of the offspring and the probabilities of each? DNA replication, Transcription and Translation problems It is S phase of the cell cycle, and time to replicate the cell’s DNA. Using the following strand of DNA…
- , Σ. K Q R. click "Turn In" on Google Classroom when you are done. 2. In pea plants, yellow seeds are dominant to green seeds. A heterozygous yellow-seeded pea plant (Yy) is crossed with a plant that has green seeds (yy). Yellow Seeds Y y Phenotype Probability (%) У Yellow Seeds: y Green Seeds: 4. In another one of Mendel's experiments. he crossed the offsprina. Two nea Hide sid US 12 Green Seeds 田The mean and variance of plant height of two highly inbred strains (P1 and P2) and their progeny (F1 and F2) are shown here. Strain Mean (cm) Variance P1 34.2 4.2 P2 55.3 3.8 F1 44.2 5.6 F2 46.3 10.3 Calculate the broad-sense heritability (H2) of plant height in this species.For many students, calculating the chi square value is the most challenging part of conducting a chi square test so it is important to practice. Consider the following information: An F1 tall, round seed pea plant is crossed with a dwarf, wrinkled seed pea plant. The following offspring are observed: Tall, round: 510 Tall, wrinkled: 495 Dwarf, round: 490 Dwarf, wrinkled: 505 a. What is the expected phenotype ratio? #:# or #:#:#:#, depending on what you think the answer is. b. What is the calculated chi-square value? Format your answer with 1 significant digit (i.e. 0.#). c. What is the critical chi-square value from the table provided in the book at the P=0.05 level of significance? Enter the number exactly as shown in this table.