If you have an F1 generation that is heterozygous for the tall/dwarf allele, cross them to...
If you have an F1 generation that is heterozygous for the tall/dwarf allele, cross them to produce an F2 generation. Draw a Punnett Square for that cross here.
a. In the F2 generation, what is the probability that the first 3 pea plants you grow will all be tall? You must show your work.
b. In the same F2 population, find the probability that 5 out of 7 plants will be tall. Use the bionomial expansion equation. This procedure is explained in Chapter 2 of your text and is explained in the third lecture of this week’s module. You must show your work including how you set up the equation.
Homework Answers
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If you have an F1 generation that is heterozygous for the
tall/dwarf allele, cross them to...
a) In radishes, the plants can be tall (allele T) or dwarf (allele t). Tall is...
a) In radishes, the plants can be tall (allele T) or dwarf (allele t). Tall is dominant. Root color can be red (allele RR), white (allele RW), or pink (heterozygote). A radish that is true-breeding for both red roots and tallness (RRRR TT) is crossed with a radish that is true-breeding for both white roots and being dwarf (RWRW tt). Write the genotype and phenotype for the F1 generation. b) Assume the two genes for plant height and root color are...
12. In snapdragons, the allele for tall plants is dominant to the allele for dwarf plants...
12. In snapdragons, the allele for tall plants is dominant to the allele for dwarf plants , and t he allele for red flowers is codominant with the allele for white flowers . The heterozygous condition for flower color is pink. Question – If a dwarf red snapdragon is crossed with a white snapdragon homozygous for tall, what are the probable genotypes and phenotypes of the F1 generation? a. tall and pink b. tall and red c. tall and white...
3. In pea plants, T is the allele for tall plants, while t is the allele for dwarf plants. If you have a tall plant, demonstrate with a testcross how it could be determined if the plant is homozy...
3. In pea plants, T is the allele for tall plants, while t is the allele for dwarf plants. If you have a tall plant, demonstrate with a testcross how it could be determined if the plant is homozygous tall or heterozygous tall. 4. Explain how incomplete dominance is different from complete dominance, a example of incomplete dominance
3. In pea plants, T is the allele for tall plants, while t is the allele for dwarf plants. If you have...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding experiments with his pea plants. ai Genetic makeup: In this particular experiment with pea plant height, the P generation consisted of pure- breeding tall pea plants mated with pure- breeding dwarf pea plants. Gametes: 0 plants nated wito Fill in the blanks of the following paragraph ,geneation concerning this experiment. Gregor Mendel discovered several new ideas about inheritance when he performed breed- Genetic makeup: ing...
This is slides 31 and 32You perform the cross between the heterozygous pea plants described in...
This is slides 31 and 32You perform the cross between
the heterozygous pea plants described in question 3 and get the
following data. What is your null hypothesis?
tell me which of the four asci show evidence of crossing over.
It could be 0-4 of the asci shown.
Low Starch, Tall: 104
Low Starch, Short: 48
High Starch, Tall: 35
High Starch, Short: 17
This is the question 3
In this lab, we were hoping to be able to do...
Let's use this equation to solve the following problem: In pea plants, the allele for tall...
Let's use this equation to solve the following problem: In pea plants, the allele for tall plants (T) is dominant to the allele for dwarf plants (1). If a population of 100 plants has 36 dwarf plants, what is the frequency of each allele? Here is a step-by-step guide: 1. Let p = frequency of the dominant allele (R), and q = frequency of the recessive allele (1). 2.92 = frequency of the homozygous recessive = 36%, or 0.36. Since...
hedrozygay heolvozyggay 1. Cross a homezygous tall (Tt) plant with a homoavgous dwarf plant (tt). Show...
hedrozygay heolvozyggay 1. Cross a homezygous tall (Tt) plant with a homoavgous dwarf plant (tt). Show the Punnett square in the space below. (5 pts) a. Which is the dominant allele? How do you know? (1 pt) b. What is the % of tall plants? What is the % of dwarf plants? (1 pt) 2. You are breeding Labrador retrievers. The female is Bbee and the male is heterozygous black BbEe. Show the results in a Punnet square. (10 pts)...
An F1 tall, round seed pea plant is crossed with a dwarf, wrinkled seed pea plant....
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? WW or ###.#, depending on what you think the answer is. b. What is the calculated chi-square value? Format your answer with 1 significant digit (...). Sure, you can try to guess it 10 times, but work it out so...
5. In Mendel's experiments, the pod color gene and the seed shape gene were located on...
5. In Mendel's experiments, the pod color gene and the seed shape gene were located on different chromosomes (in other words, they were not linked. They assort independently). Green pods (G) are dominant over yellow pods (g) and tall stems (T) are dominant over dwarf stems (t). You are given two true breeding plants (homozygous at both genes). In the parental (P) generation, one parent has green pods and dwarf stems and the second parent has yellow pods and tall...
7. A. What is the most likely mode of inheritance of the following trait? B. What...
7. A. What is the most likely mode of inheritance of the following trait? B. What is the genotype of individuals 1-3, II-5, and III-1? OOO.ID 8. Allele key: P=purple flower allele p =white allele T = tall stem length t=dwarf stem length a. A pea plant is homozygous for purple flowers and heterozygous for a tall stem length (PPTt). List the two types of garnetes this plant can form. Remember, all gametes must have 1 allele from each gene...
3. In pea plants, T is the allele for tall plants, while t is the allele for dwarf plants. If you have a tall plant, demonstrate with a testcross how it could be determined if the plant is homozygous tall or heterozygous tall. 4. Explain how incomplete dominance is different from complete dominance, a example of incomplete dominance
3. In pea plants, T is the allele for tall plants, while t is the allele for dwarf plants. If you have...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding experiments with his pea plants. ai Genetic makeup: In this particular experiment with pea plant height, the P generation consisted of pure- breeding tall pea plants mated with pure- breeding dwarf pea plants. Gametes: 0 plants nated wito Fill in the blanks of the following paragraph ,geneation concerning this experiment. Gregor Mendel discovered several new ideas about inheritance when he performed breed- Genetic makeup: ing...
This is slides 31 and 32You perform the cross between
the heterozygous pea plants described in question 3 and get the
following data. What is your null hypothesis?
tell me which of the four asci show evidence of crossing over.
It could be 0-4 of the asci shown.
Low Starch, Tall: 104
Low Starch, Short: 48
High Starch, Tall: 35
High Starch, Short: 17
This is the question 3
In this lab, we were hoping to be able to do...
Let's use this equation to solve the following problem: In pea plants, the allele for tall plants (T) is dominant to the allele for dwarf plants (1). If a population of 100 plants has 36 dwarf plants, what is the frequency of each allele? Here is a step-by-step guide: 1. Let p = frequency of the dominant allele (R), and q = frequency of the recessive allele (1). 2.92 = frequency of the homozygous recessive = 36%, or 0.36. Since...
hedrozygay heolvozyggay 1. Cross a homezygous tall (Tt) plant with a homoavgous dwarf plant (tt). Show the Punnett square in the space below. (5 pts) a. Which is the dominant allele? How do you know? (1 pt) b. What is the % of tall plants? What is the % of dwarf plants? (1 pt) 2. You are breeding Labrador retrievers. The female is Bbee and the male is heterozygous black BbEe. Show the results in a Punnet square. (10 pts)...
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? WW or ###.#, depending on what you think the answer is. b. What is the calculated chi-square value? Format your answer with 1 significant digit (...). Sure, you can try to guess it 10 times, but work it out so...
5. In Mendel's experiments, the pod color gene and the seed shape gene were located on different chromosomes (in other words, they were not linked. They assort independently). Green pods (G) are dominant over yellow pods (g) and tall stems (T) are dominant over dwarf stems (t). You are given two true breeding plants (homozygous at both genes). In the parental (P) generation, one parent has green pods and dwarf stems and the second parent has yellow pods and tall...
7. A. What is the most likely mode of inheritance of the following trait? B. What is the genotype of individuals 1-3, II-5, and III-1? OOO.ID 8. Allele key: P=purple flower allele p =white allele T = tall stem length t=dwarf stem length a. A pea plant is homozygous for purple flowers and heterozygous for a tall stem length (PPTt). List the two types of garnetes this plant can form. Remember, all gametes must have 1 allele from each gene...
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