Q4- Indicate how to calculate the expected allele/genotype frequencies of a F4 of derived progeny rows from one population formed from crossing two pure line parents

IN D Genetics Tutorial 3-Satish Sasikumar 30-12-2020.pdf In radishes, flower color may be red, purple, or white. The edible portion of the radish may be long or oval. When only flower color is studied, no dominance is evident, and red white crosses yield all purple. If these F1 purples are interbred, the F2 generation consists of 1/4 red: 1/2 purple: 1/4 white. Regarding radish shape, long is dominant to oval in a normal Mendelian fashion. (a) Determine the F1 and F2 phenotypes from a cross between a true-breeding red, long radish and a radish that is white and oval. Be sure to define all gene symbols at the start. (b) A red oval plant was crossed with a plant of unknown genotype and phenotype, yielding the following offspring: 103 red long: 101 red oval 98 purple long: 100 purple oval Determine the genotype and phenotype of the unknown plant.

Activity 4 Identification of phenotype of known genotype The characteristic of the color of the red tomato fruit (R) is dominant over the characteristic of the yellow color (r) The characteristic of the color of white flowers (W) is dominant over the characteristic of the color of the yellow flowers (w), and the characteristic length of the stem of the plant (T) is dominant over the short characteristic (t) If a red fruit plant with yellow and long-stemmed flowers is crossed, with anotheryellow, white-flowered and short-stemmed plant, knowing that the dominant characteristic is pure. What is the phenotype of individuals of the resulting generation?

Below you will find a spreadsheet of the "class" data, use this to complete data table 2. Remember, the class is a total of 24 students, to calculate frequency use the genotype with the highest frequency for each characteristic and divide that number by 24. Don't forget to answer the question on the bottom of page 107! Gender Letters XY XX Sex X, Y 11 13 XX Homozygous Heterozygous Homozygous Recessive Genotype highest frequency Characteristic Dominant Aa Eyebrows Eye Shape Hitchhikers А, а R, r 14 10 11 3 Rr Hh Н, h D, d Е, е F,f G, g В, Ь 15 Earlobes 4 8. 12 dd Ee Tongue Roll Widows Peak 7 10 13 Ff Face Shape 9. 12 3 Gg Eye Color 14 Bb MacBook Air esc 4) FI F2 F4 F5 F6 F8 F9 F10 F1I F12 @ # $ &

Instructions: Answer the following problem using the punett square and identify its Genotypic ratio and Phenotypic ratio. 1. A homozygous round-seeded plant (RR) is crossed with a homozygous wrinkle-seeded plant (rr). What is the phenotypic and genotypic ratio of their offspring? Genotypic Ratio Phenotypic Ratio- 2. A heterozygous green-colored pod (Gg) is crossed with a yellow-colored pod (gg). Predict the Genotypic and Phenotypic ratio of their offspring. Genotypic Ration Phenotypic Ration

select whcih ic correct When 2 wildtype alleles are on the same parental chromosome, this is known as       [Combined or Coupling or dispersed or heterozygous or Repulsion]  . In sharp contrast       [Combined or Coupling or dispersed or heterozygous or Repulsion]  is when 1 wildtype allele and 1 mutant allele are on the same parental chromosome

Dihybrid Cross Problem 2: When does a phenotype ratio of 9:3:3:1 occur? A phenotype ratio of 9:3:3:1 in the offspring of a mating of two organisms heterozygous for two traits is expected when: A. the genes reside on the same chromosome B. each gene contains two mutations C. the gene pairs assort independently during meiosis D. only recessive traits are scored E. none of the above

Direction: Answer the following problems: 1. Predict the phenotypic ratios of offspring when a homozygous white cow is crossed with a roan bull. Illustrate using a Punnett square. 2. Complete the Punnett square for a cross between a black chicken (BB) and a white chicken (WW). Give the phenotype of the offspring in the F1 generation. Кey BB – black ww- white F1 BW – checkered Phenotype:

Q10)     Suppose you were to obtain a Chi-square value of 7.82 or greater in your data analysis (with 2 degrees of freedom). What would this indicate? -    Suppose you were to obtain a Chi-square value of 4.60 or lower in your data analysis (with 2 degrees of freedom). What would this indicate? -   A heterozygous white-fruited squash plant is crossed with a yellow-fruited plant, yielding 200 seeds. Of these, 110 produce white-fruited plants while only 90 produce yellow-fruited plants. Are these results statistically significant? Explain using Chi-square analysis. -    What if there were 2000 seeds and 1100 produced white-fruited plants & 900 yellow-fruited?

estion 2 of 15 Ⓒ Macmillan Learning > Match each phenotype description to its corresponding sex chromosome genotype in humans. XX with SRY on X phenotypically female but karyotype indicates presence of both sex chromosomes XY with SRY deleted phenotypically male but karyotype indicates presence of only X chromosomes hp XXXX phenotypically female with some abnormalities and overexpression of X chromosome genes Answer Bank A 0 XXY phenotypically male with sterility and hypogonadism € US ES ☐ Attempt 2 Apr 1 XYY phenotypically male with an increase in average stature 3:52 STAY