You are Gregor Mendel. You have 2 pea plants, one that grew from a green seed,...

You are Gregor Mendel. You have 2 pea plants, one that grew from a green seed, the other that grew from a yellow seed. The parents of both plants were previously highly inbred so that each of your plants is homozygous at all genetic loci. You cross the 2 plants; the seeds that develop from the cross are the F1 generation. You count the seeds and compare the number of green seeds with the number of yellow seeds.

Question 1: What are the genotypes of the 2 parents of your cross? Use standard genetic nomenclature.

Question 2: In the F1 generation, what is the phenotype? What is the genotype?

Question 3: In the F2 generation, what phenotypes do you see? For each phenotype, what is/are the genotype(s)?

Question 4: In the F2, what is the ratio of green seeds to yellow seeds?

Question 5: Which phenotype is dominant?

answer is explanation, no diagram please

Expert Solution

gladiator answered 2 years ago

One character Gregor Mendel studied was pea pod colour where the allele for green pods was...

One character Gregor Mendel studied was pea pod colour where the allele for green pods was dominant and the allele for yellow pods was recessive. A second character he studied was pea pod shape where the allele for inflated was dominant and the allele for constricted was recessive. In crossing these plants he started with one true-breeding parent that had green inflated pods and the other true breeding parent had yellow constricted pods. a) What is the genotype of the...

1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed...

1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed colour (y). In a population of 40 pea plants, 15 pea plants are homozygous dominant, 15 are heterozygous dominant, and 10 are recessive. Find the frequency of the a. YY genotype b. Yy genotype c. yy genotype 2.In sheep, a hairy coat (H) is dominant over woolly fleece (h). In a population of 20 sheep, 9 sheep are homozygous dominant and 9 sheep are heterozygous dominant. Find...

1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed...

1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed colour (y). In a population of 40 pea plants, 15 pea plants are homozygous dominant, 15 are heterozygous dominant, and 10 are recessive. Find the frequency of the a. YY genotype b. Yy genotype c. yy genotype 2.In sheep, a hairy coat (H) is dominant over woolly fleece (h). In a population of 20 sheep, 9 sheep are homozygous dominant and 9 sheep are heterozygous dominant. Find...

Mendel crossed pea plants that had yellow-round seeds with plants that had green-wrinkled seeds. The first...

Mendel crossed pea plants that had yellow-round seeds with plants that had green-wrinkled seeds. The first generation produced plants with all yellow-round seeds. Self crossing of these plants produced the following F2 phenotypes: Yellow-Round Yellow-wrinkled Green-round Green-wrinkled Count 315 101 108 32 The expected phenotypic ratio is 9:3:3:1 1. What are the null and alternate hypotheses for the chi-square goodness of fit test? 2. What are the expected counts under the null hypothesis? 3. Determine a chi-square test statistic and...

Describe how Mendel cross-fertilized and self-fertilized pea plants.

In Mendel's pea plants, the genes that code for flower color, seed color and seed shape...

In Mendel's pea plants, the genes that code for flower color, seed color and seed shape are on 3 different chromosomes. For flower color, purple is dominant over white, yellow seeds are dominant over green and round seeds are dominant over wrinkled seeds. If you crossed two parents who were heterozygous for all 3 genes, how many purple flowered, round and yellow seeded plants would you expect in the offspring generation? correct answer is 27/64 please show work thank you

Mendel derived four principles of inheritance from his genetics experiments with pea plants. Explain these four...

Mendel derived four principles of inheritance from his genetics experiments with pea plants. Explain these four postulates in your own words. Using the chromosomes pictured in Figure 2-10 on pages 22-23 in your textbook, relate his Law of Segregation and Law of Independent Assortment to your knowledge of meiosis. Be sure to describe the stages of meiosis that demonstrate these laws.

1- What was one of the most significant conclusions that Gregor Mendel drew from his experiments...

1- What was one of the most significant conclusions that Gregor Mendel drew from his experiments with pea plants? Group of answer choices There is considerable genetic variation in garden peas. An organism that is homozygous for many recessive traits is at a disadvantage. Traits are inherited in discrete units and are not the results of "blending." Genes are composed of DNA. 2- In a testcross, an unknown individual was crossed with a homozygous recessive individual and 50% of the...

4. Mendel worked with pea plant varieties with contrasting traits. Suppose that you are studying pea...

4. Mendel worked with pea plant varieties with contrasting traits. Suppose that you are studying pea plants with either round peas (R) or wrinkled peas (r), yellow peas (Y) or green peas (y), purple flowers (P) or white flowers (p), tall plants (T) or short plants (t). Assume that you are starting with a cross where one plant (1) has the genotype R/r; y/y; P/p; T/t and the second plant (2) is R/r; Y/Y; P/p; t/t. If you were to...

2) Consider a hairy pea plant that was grown from yellow seed (an F1 hybrid). This...

2) Consider a hairy pea plant that was grown from yellow seed (an F1 hybrid). This hybrid had one parent (P1) that was an inbred variety with no hairs and was grown from a green seed. P2 was also an inbred variety, but grown from a yellow seed and had hairy leaves. After a backcross of the F1 hybrid to the P1 parent the following progeny are observed. Yellow seed/Smooth 29 Yellow seed /Hairy 82 Green seed /Smooth 9...

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You are Gregor Mendel. You have 2 pea plants, one that grew from a green seed,...

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One character Gregor Mendel studied was pea pod colour where the allele for green pods was...

1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed...

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Describe how Mendel cross-fertilized and self-fertilized pea plants.

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