Homework Answers
From the given data,
The 55 and 52 are parental and 25 and 28 are the recombinants. Based on the comparison of recombinants with the parental, we can say that there is a recombination or crossing over takes place between the stem termination locus and flower color. Crossing over (of chromosomes during meiosis) and independent assortment (of alleles during meiosis) also causes genetic variability. But crossing over and independent assortment causes genetic variability by recombining existing traits.
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You want to know if flower color locus and stem termination locus are on the same...
You are studying three linked genes in snapdragons. The flower color locus is in the center....
You are studying three linked genes in snapdragons. The flower color locus is in the center. There are 12.7 cM between the flower color locus and the plant height locus. There are 11.5 cM between the flower color locus and the leaf type locus. The coefficient of coincidence is 0.8. Pure-breeding tall, red-flowered plants with fuzzy leaves were crossed to pure-breeding dwarf, blue-flowered plants with smooth leaves. The F1 were testcrossed. Calculate the proportion of the testcross progeny that are...
2. You carry out a dihybrid cross in sweet peas where you examine the flower color...
2. You carry out a dihybrid cross in sweet peas where you examine the flower color locus (use symbols based on "P" for this gene) and blooming time locus (use symbols based on "L" for this gene). You cross a true breeding purple- flowering, early blooming plant to a true breeding red-flowering, late blooming plant. The F1 plants are all purple- flowering and late blooming. The F1 plants were subsequently used in a testcross. The flower color locus and the...
You are doing and experiment on inbreeding in Phlox plants with a single-locus polymorphism in flower...
You are doing and experiment on inbreeding in Phlox plants with a single-locus polymorphism in flower color. WW genotypes have white flowers, PP genotypes have purple flowers, and WP genotypes have magenta flowers. You construct an artificial population in the greenhouse consisting of 50 white-flowered phenotypes and 50 purple-flowered phenotypes. You then cross all individuals randomly and grow out 100 F1 seeds. What are the genotype frequencies among the F1 offspring if you assume Hardy Weinberg equilibrium?
You decide that you want to replicate some of Mendel’s original results. You begin your experiment...
You decide that you want to replicate some of Mendel’s original results. You begin your experiment with plants that have true breeding traits, one set of plants that have purple flowers and round seeds, the other with white flowers and wrinkled seeds. You do a cross and the progeny (F1 generation) are all purple flowering and produce round seeds. What is the probability that a cross between two F1's will yield offspring that are white and with wrinkled seeds? Seed...
Question 2b) You are studying a flowering plant that produces remarkable bright green flowers in its...
Question 2b) You are studying a flowering plant that produces remarkable bright green flowers in its wild type. Your colleagues have discovered two new mutant lines of this plant. One new line breeds true for a yellow flower color. Another new line breeds true for a blue flower color. Your group does the following crosses and makes these observations: yellow X green ⇒ F1 is all green ⇒ F2 75% green and 25% yellow blue X green ⇒ F1 is...
for questions 25 - 26 using the letters below. This set of questions refers to Mendel’s...
for
questions 25 - 26 using the letters below. This set of questions
refers to Mendel’s plants with either Purple flowers or White
flowers A. PP B. Pp C. pp D. PP or Pp E. Pp or pp F. PP or pp G.
none of these answers 25. A purple flowering pea plant of unknown
genotype would be best described by which answer above 26. To
determine the genotype of a purple flowering plant of unknown
genotype, you would cross...
please show steps for part A B C D and E thank you! 18. The color...
please show steps for part A B C D and E thank you!
18. The color of pea plant flowers is a Mendelian trait. Tuq pea plants with purple flowers are crossed, you want to know what the pa ong the offspring, 80 have purple lowers, and 25 have white flowers. With a Goodness-of-fit chi-square test, setting the significance level at 0 05 (a), compare the observed numbers with a 3:1 ratio of purple to white and answer the following...
7. If offspring exhibit a 3:1 phenotypic are the parents' genotypes? f purple flower color in...
7. If offspring exhibit a 3:1 phenotypic are the parents' genotypes? f purple flower color in a plant is controlled by the allele Rand white flower.com by the allele, which flower color is dominant? and white flower color is controlled 9. If a heterozygous purple flowered plant is crossed with a white flowered plant w phenotypes of their offspring? as 10. If the offspring of a cross are 50 purple-flowered plants and 14 white-flowered plants, what are the genotypes of...
Multiple Choice 1. You count 1000 seeds from a monohybrid cross (i.e., single-locus heterozygote crossed with...
Multiple Choice
1. You count 1000 seeds from a monohybrid cross (i.e., single-locus heterozygote crossed with single-locus heterozygote). How many seeds do you expect to display the dominant phenotype? a. 1000 b. 750 c. 500 d. 250 2. Which of the following is among the purposes of a genetic dissection analysis? a. To determine how two alleles at a locus interact with one another. b. To determine the order of intermediaries in a genetic pathway. c. To determine whether a...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving rise to a “hairless” phenotype. In the homozygous condition, H is lethal. An independently assorting dominant allele S has no effect on bristle number except in the presence of H, in which case a single dose of S suppresses the hairless phenotype, thus restoring the "hairy" phenotype. However, S also is lethal in the homozygous (S/S) condition. What ratio of hairy to hairless flies...
2. You carry out a dihybrid cross in sweet peas where you examine the flower color locus (use symbols based on "P" for this gene) and blooming time locus (use symbols based on "L" for this gene). You cross a true breeding purple- flowering, early blooming plant to a true breeding red-flowering, late blooming plant. The F1 plants are all purple- flowering and late blooming. The F1 plants were subsequently used in a testcross. The flower color locus and the...
for
questions 25 - 26 using the letters below. This set of questions
refers to Mendel’s plants with either Purple flowers or White
flowers A. PP B. Pp C. pp D. PP or Pp E. Pp or pp F. PP or pp G.
none of these answers 25. A purple flowering pea plant of unknown
genotype would be best described by which answer above 26. To
determine the genotype of a purple flowering plant of unknown
genotype, you would cross...
please show steps for part A B C D and E thank you!
18. The color of pea plant flowers is a Mendelian trait. Tuq pea plants with purple flowers are crossed, you want to know what the pa ong the offspring, 80 have purple lowers, and 25 have white flowers. With a Goodness-of-fit chi-square test, setting the significance level at 0 05 (a), compare the observed numbers with a 3:1 ratio of purple to white and answer the following...
7. If offspring exhibit a 3:1 phenotypic are the parents' genotypes? f purple flower color in a plant is controlled by the allele Rand white flower.com by the allele, which flower color is dominant? and white flower color is controlled 9. If a heterozygous purple flowered plant is crossed with a white flowered plant w phenotypes of their offspring? as 10. If the offspring of a cross are 50 purple-flowered plants and 14 white-flowered plants, what are the genotypes of...
Multiple Choice
1. You count 1000 seeds from a monohybrid cross (i.e., single-locus heterozygote crossed with single-locus heterozygote). How many seeds do you expect to display the dominant phenotype? a. 1000 b. 750 c. 500 d. 250 2. Which of the following is among the purposes of a genetic dissection analysis? a. To determine how two alleles at a locus interact with one another. b. To determine the order of intermediaries in a genetic pathway. c. To determine whether a...
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