Exercise 2: Natural Selection4. The different types of beaks on Darwin's finches can be thought of as different types oftools. Your group will be given a "beak."Describe the "beak" that you have been given.24EMake a prediction: What type of diet (seeds) is you "bird" (beak tool) most likely to "eat"up effectively)? Explain why your beak is better suited to the seeds you predict it will eat?(pickCEC 22Exercise 2: Natural Selection23Simulating the Evolution of Beak Size and Shape In this exercise we are going to simulate thesituation on Daphne Major.1. Your team will be given a small bag of seeds. Spread out the seeds and describe theirappearance including shape, color, markings, etc. Take a measurement of a typical seed of eachkind with a sliding caliper (in millimeters, of course). Record your data in Table 1.2. Next, divide your seeds by kind and count the total number of each kind of seed. Recordyour data in Table 1.Table 1SeedDescriptionSizeNumberpopcorn???split peas???sunflower seeds२จbeans१?3. Select one kind of seed and measure three of this kind. Describe each on individually, notingthe similarities and differences between them. Record your data in Table 2.Seed type:Understanding NaturalVariationTable 2Seed Description1Within a species, individualsdiffer from each other in2?small ways. Among your3seeds of the same kind, eachwill look slightly differentSize?2?from the others. This is kind of individual variation we see within a population: seeds, birds, orpeople.choigWithout variation, natural selection cannot occur. Explain why.

Each seed within a type (e.g., sunflower seed) will have slight variations in color, shape, or even…

Exercise 2: Natural Selection 4. The different types of beaks on Darwin's finches can be thought of as different types of tools. Your group will be given a "beak." Describe the "beak" that you have been given. 24 Make a prediction: What type of diet (seeds) is you "bird" (beak tool) most likely to "eat" (pick up effectively)? Explain why your beak is better suited to the seeds you predict it will eat?

Exercise 2: Natural Selection 4. The different types of beaks on Darwin's finches can be thought of as different types of tools. Your group will be given a "beak." Describe the "beak" that you have been given. 24 Make a prediction: What type of diet (seeds) is you "bird" (beak tool) most likely to "eat" (pick up effectively)? Explain why your beak is better suited to the seeds you predict it will eat?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 9RQ: A scientist pollinates a true-breeding pea plant with violet, terminal flowers with pollen from a...

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Pa × PP Dd 6/6 - Long beak Short beak 7. What percentage of the offspring will have a homozygous dominant genotype? 8. What will be the ratio of long beaks to short beaks in the offspring? LI x 11 9. What percentage of the offspring will White flowers Purple flowers have purple flowers as their phenotype? 10. What percentage of the offspring will have a heterozygous genotype? pp х x PP 11. What percentage of the offspring will Dark eyes Dark eyes have a heterozygous genotype?
Please answer the following questions for me: 1 Why is it important to determine whether or not genes that provides insecticide and fungi resistance may be transferred to wild sunflowers? 2. What factors would you measure (response, or dependent varibles)? 3. Fitness can be measured as a seed set (seed production) Why is it important to measure as seed production? 4. Cultivated sunflowers have one stem that produces one single large flower head, while wild flowers have many branches that produce many flowers. Why is it important to measure branching pattern (number of branches produced by F1 plants, backcrosses and wild type sunflowers? 5. Why is it important to include blackcrosses in the exeriment?
nce of one trait affect theother trait. Activity 2 Study the figure below, which represents the second generation of the results of self-pollination of a pea plant, the symbol for the yellow trait of seeds is (Y) and green seeds (y), and for smooth seeds (R) and wrinkled seeds (r). Answer the questions that followthe diagram: F, cross RrYy x RrYy RY Ry RRYY ry RrYy RRYY RIYY round yellow RY round green wrinkled yellow RRYY RRyy RrYy Rryy wrinkled green Ry RrYY RrYy rrYy rrYY rY RrYy Rryy rrYY rryy ry 1. Write the genotype and phenotype of the parents in the first generation. 2. Write the genotypes of gametes in the first generation. 3. Write the genotypes and phenotype of first generation individuals. 4. How many types of gametes can second-generation parents produce? 5. Write the phenotypes for members of the second generation. 6. How many phenotypes appeared among the members of the second generation? 7. What is the ratio of individuals green seed to yellow seed in the second 6. What…
VOLTE1¹67 3:41fb. : +91 97532 46070 21 जुलाई, शाम 5:38 → Class XII 1. Draw a 2. Explain 7. Seed (B) Fruit Jawahar Navodaya labelled Subject: Biology laya Vidyalaya Buranabad ujjain -2 diagram of Embryo Insects. sac 2and microsporagium. Megasporogeneris. Pollen grains Embryo Development. by Pollination. 3. Draw a labelled diagram of female reproductory system. 4. List hormones of pregnancy and their role. 5. Project Report (Topic given) 6. Make a Chart / Model from any, subject or topic. from Chapter 2 and 3. on Do survey diffcunt pollinating Agent within your Economic valuu. ⇓ C. 4. O ט
A scientist pollinates a true-breeding pea plant with violet, terminal flowers with pollen from a true- breeding pea plant with white, axial flowers. Which of the following observations would most accurately describe the F2 generation? 75% violet flowers; 75% terminal flowers 75% white flowers in a terminal position 75% violet flowers; 75% axial flowers 75% violet flowers in an axial position
SUNJECT - BIOLOGY (Genetics) × PROBABILITY. Based on the give question (PpYyRr * Ppyyrr) (SEE IMAGE), compute the following probabilities. Show your solutions. 1. Probability of PpYyRr 2. Probability of PPyyRr 3. Probability of at least exhibiting wrinkled seeds 4. Probability of at least exhibiting purple flowers 5. Probability of white flower, yellow and round seeds 6. Probability of having purple flowers and green seeds and round seeds 7. Probability of having white flower and yellow seed, or, white flower and wrinkled seed.
Activity 3 In groups, discuss the following question then write your conclusions into your note book In the pea plant, the characteristic of purple (P) flowers is dominant over white (p) while The color of the green pods (G) is dominant over yellow (g). Pollina- tion was carried out between two plants, both purple and green pods and hybrid. 1) Write the genotypes of the parents. 2) Write the genotypes of the gametes, and check their number using the fol- lowing code: The number of types of gametes = 2n, where 'n' is the hybrid traits. 3) Write the genotypes and the phenotype of first generation individuals. 4) Calculate the probability of the appearance of the following models: (1) Genotype (Ppgg). (2) Phenotype, Form (Green Purple).
6. Compose an argument to defend whether offspring of strawberry plants or spinach plants would be more genetically diverse. For your argument, assume that strawberry plants use a form of reproduction called runners (see Figure 1) and that spinach plants reproduce through sexual reproduction. Figure 1. A drawing and picture of strawberry plant runners In your response, Font FIG. 56.-RUNNER OF THE STRAWBERRY. runner • Describe the cause-and-effect relationships between the type of reproduction and the resulting genetic variation of the offspring as compared to each other and the parent(s). • Use evidence and scientific reasoning to support your argument. • You may support your argument with one or more models (for example: labeled diagrams and/or one or more Punnett squares) Size Ω A A ▼ BIUS X₂ runner 99 ==
The drooping, bell-like flower Aquilegia canadensis is adapted for cross-pollination. However, if the plant has not been pollinated previously, self-pollination can occur. However, if cross pollination occurs after self-pollination takes place, the pollen from cross pollination reaches the style before the pollen from self-pollination. Using course concepts and vocabulary 1) Provide a reasoning for this phenomenon. 2) Would this adaptation for reproduction be beneficial for the plant?
For 21. What are the genotypes of the F2 generation. Of the F₁ generation. Of the parents 22. If it were possible, how would you determine whether a tall individual is heterozygous or homozygous? 23. How do the observed phenotypes of your seedlings compare with the expected F2 ratio? To calculate your expected ratio numbers given the total number of seedlings that you counted use the following steps: A. Determine your expected ratio. For a monohybrid cross between two F1 plants, both heterozygous for the trait, you would expect a 3:1 ratio. If you add 3+1, it equals 4. Therefore, each category is a fraction of 4. This means that you expect the following fractions 3/4 and 1/4 for the two phenotypic class. B. Determine your total number of corn plants actually counted. C. Multiple each fraction by the total number of seedlings you actually counted. a. For example, if you counted 85 seedlings, you would expect the following: i. 3/4 X 85= 64 tall seedlings ii. 1/4 X 85 = 21 dwarf seedlings…
In their experiments with the flowers of Begonia involucrate, Agren and Schemske (1991) observed that there was a trade-off between what two characteristics? Size of flower and number of flowers on inflorescence Size of flower and pollination Annual versus perennial reproduction O Time and expense to grow the pollen tube versus cost of maintaining the flower on the tree
3. If the trait follows Mendelian rules whats may be involved in the vould be the phenotypic ratios of the mine if the tralt is consisient wtha Htance of komals smooth (R) Parental (P) offspring in the F, generation? Percentage Smooth F, Wrinkled The appearance of the kernel as smooth or wrinkled is determined by the sugar content in the endosperm and is also genetically controlled. Normal field corn, which is used for feeding livestock, is high in amylose starch. The corn we like to eat is high in sugar-yum, sweet F2 ?