Q5. When Mendel crossed a large number of tall pea plants with short pea plants, all F1 plants were tall. The F2 generation was created by self-pollinating the F1 plants. (a) Complete a genetic cross of F1 to show the genotypes and phenotypes of the parents and offspring. (b) Complete a genetic cross of F2 to show the genotypes and phenotypes of the offspring. (c) State the ratio of phenotypes expected in the F2 offspring. (d) Mendel's First Law of inheritance states that, "...the alleles of a given locus segregate into separate gametes." Explain how the genetic diagram above proves this law. (AC 2.1)

Q5. When Mendel crossed a large number of tall pea plants with short pea plants, all F1 plants were tall. The F2 generation was created by self-pollinating the F1 plants. (a) Complete a genetic cross of F1 to show the genotypes and phenotypes of the parents and offspring. (b) Complete a genetic cross of F2 to show the genotypes and phenotypes of the offspring. (c) State the ratio of phenotypes expected in the F2 offspring. (d) Mendel's First Law of inheritance states that, "...the alleles of a given locus segregate into separate gametes." Explain how the genetic diagram above proves this law. (AC 2.1)

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 1VCQ: Figure 12.5 In pea plants, round peas (R) are dominant to wrinkled peas (r). You do a test cross...

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3. When Mendel cross- fertilised tall purple-flowered pea plants with short white-flowered pea plan and grew the resulting seeds. All the F1 generation were tall with purple flowers. a) Draw a genetic diagram to show the genotypes and phenotypes of the F1 generation b) Construct a punnett square to predict the outcomes of the phenotypes produced if the F1 generation were allowed to self fertilise. What is the phenotypic ratio?
1. In a cross between a black and a white guinea pig, all members of the F1 generation are black. The F2 generation is made up of approximately 3/4 black and 1/4 white guinea pigs. (a) Diagram this cross, showing the genotypes and phenotypes. (b) What will the offspring be like if two F2 white guinea pigs are mated?
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3)Mendel found that crossing wrinkle-seeded (rr) plants with homozygous round-seeded(RR) plants produced only round-seeded plants. What genotype ratio and phenotyperatio can be expected from a cross between a wrinkle-seeded plant and a heterozygousplant for this characteristic?
In Mendels breeding experiment on garden pea, the offspring of F2 generation are obtained in the ratio of 25% pure yellow pod, 50% hybrid green pods and 25% green pods State (i) which pod colour is dominant (ii) The Phenotypes of the individuals of F1generation. (iii) Workout the cross.
Part 1: Make a three part process drawing (like a cartoon strip) to demonstrate Mendel's Principle of Segregation. Use two parents with homologous chromosomes marked with alleles "A" and "a". Circle and label these three action parts of the Principle of Segregation: a) parents are diploid, b) alleles separate to form haploid gametes (indicate when this happens), and c) gametes from each parent combine at random to form diploid offspring Part 2: Use the cross Aa x Aa and a Punnett square to demonstrate Mendel's Principle of Segregation. Circle and label these three action parts of the Principle of Segregation: a) parents are diploid, b) alleles separate to form haploid gametes and c) gametes from each parent combine at random to form diploid offspring. Part 3: Use homologous chromosomes marked with alleles "A" and "a" and a second pair of homologs marked with alleles "B" and "b". to demonstrate Mendel's Principle of Independent Assortment in cells in Meiosis. Indicate what phase this…
Part 1: Make a three part process drawing (like a cartoon strip) to demonstrate Mendel’s Principle of Segregation. Use two parents with homologous chromosomes marked with alleles “A” and “a”. Circle and label these three action parts of the Principle of Segregation: a) parents are diploid, b) alleles separate to form haploid gametes (indicate when this happens), and c) gametes from each parent combine at random to form diploid offspring Part 2: Use the cross Aa x Aa and a Punnett square to demonstrate Mendel’s Principle of Segregation. Circle and label these three action parts of the Principle of Segregation: a) parents are diploid, b) alleles separate to form haploid gametes and c) gametes from each parent combine at random to form diploid offspring. Write the expected genotypic and phenotypic ratios.
1. The allele G for yellow stigma is completely dominant to green (g). Supposingtwo strains of autotetraploid plants are available and their genotypes are as follows:GGgg – in this plant the gene is close to the centromereGggg – in this plant the gene is far from the centromere If these two plants are crossed:a) provide the gametes that can be obtained from the two plants;b) provide the genotypic and phenotypic ratios of the offspring. 2. Consider the illustration below. Diagram the configuration you would observe at Anaphase I if crossing-over happens within the inversion. (IMAGE ATTACHED)
1. Imagine you have crossed a pure breeding purple flower and pinched pod shape pea plant with a pure breeding white flower and round pod shape pea plant. What would the phenotype be with respect to the flower color and the pod shape in the F1 generation? ” 2. If one of the F1 was allowed to cross-fertilize, what would be the possible phenotypes in the F2 and how many of each phenotype would you predict out of a total of 200 F2 progeny?”
1. A homozygous red Japanese four o'clock plant (RR) is crossed with a homozygous white Japanese four o'clock plant (WW). All of the offspring from this cross are observed to have pink flowers. a) What type of hereditary pattern is this? b) What will be the result of a cross between a pink Japanese four o'clock plant and a red Japanese four o'clock plant? Determine the genotypes, phenotypes, genotypic ratio, and phenotypic ratio.
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