Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 11.4, Problem 1TC
Can the genotype of a plant grown from a smooth, yellow seed be revealed by a test cross with a plant grown from a wrinkled, green seed? Explain your answer.
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A cross is made between two plants with five independently assorting genes. SHOW YOUR WORK
AA Bb Dd Ee hh X Aa Bb Dd ee Hh
What is the probability of obtaining a plant with the genotype AA BB Dd ee Hh?
A) Describe the data you collect from the Purple 1 x Purple 2 cross. Predict the genotype of each of the parent plants. Explain your predictions using data from the experiment.
B) Consider the offspring, the next generation (F1), from the Purple 1 x Purple 2 cross. What is the probability of a green stem plant? How do you know this?
C) What is the probability in the F2 generation of a green stem offspring? Use a Punnett square(s) and quantitative data to explain your thinking. Upload your Punnett square(s).
Flower color in petunias is determined by the biochemical pathway shown below:
A_
B_
C_
Yellow
Orange
> Green
Blue
aa
bb
Plants of genotype AAbbcc were mated to plants of genotype AaBbCc. Determine the
phenotypic ratio expected from this cross and fill in the spaces in the ratio below with whole
numbers in lowest form. lf none are expected in a class, then type the number 0 in the space.
Yellow:
Orange :
Green:
Blue
Chapter 11 Solutions
Biology
Ch. 11.1 - describe the relationships among chromosomes,...Ch. 11.1 - Prob. 2CYLCh. 11.2 - distinguish between self-fertilization and...Ch. 11.2 - Prob. 2CYLCh. 11.3 - Prob. 1TCCh. 11.3 - Prob. 1CSCCh. 11.3 - describe the pattern of inheritance of a trait...Ch. 11.3 - Prob. 2CYLCh. 11.3 - Prob. 3CYLCh. 11.4 - Can the genotype of a plant grown from a smooth,...
Ch. 11.4 - Prob. 2TCCh. 11.4 - Prob. 1CYLCh. 11.4 - Prob. 2CYLCh. 11.4 - Prob. 3CYLCh. 11.5 - Prob. 1TCCh. 11.5 - Prob. 1CSCCh. 11.5 - Prob. 1HYEWCh. 11.5 - Prob. 1CYLCh. 11.5 - Prob. 2CYLCh. 11.6 - describe how the patterns of inheritance differ...Ch. 11.7 - If a color-deficient woman and a man with normal...Ch. 11.7 - Prob. 1CYLCh. 11.7 - explain why most sex-linked traits are controlled...Ch. 11.7 - describe the pattern of inheritance of sex-linked...Ch. 11.8 - Prob. 1TCCh. 11.8 - use pedigrees to determine the pattern of...Ch. 11.8 - Prob. 2CYLCh. 11.8 - Prob. 3CYLCh. 11.8 - Prob. 2TCCh. 11.8 - Prob. 1CTCh. 11 - Prob. 1MCCh. 11 - Prob. 2MCCh. 11 - Independent assortment means that a. two genes on...Ch. 11 - Prob. 4MCCh. 11 - Prob. 5MCCh. 11 - An organism is described as Rr, with red coloring....Ch. 11 - Prob. 2FIBCh. 11 - Prob. 3FIBCh. 11 - Genes that are present on one sex chromosome but...Ch. 11 - Prob. 5FIBCh. 11 - Define the following terms: gene, allele,...Ch. 11 - Prob. 2RQCh. 11 - Prob. 3RQCh. 11 - Prob. 4RQCh. 11 - Prob. 5RQCh. 11 - Prob. 6RQCh. 11 - Prob. 1ACCh. 11 - Prob. 2ACCh. 11 - In certain cattle, hair color can be red...Ch. 11 - In the edible pea, tall (T) is dominant to short...Ch. 11 - Prob. 3GPCh. 11 - Prob. 4GPCh. 11 - Prob. 5GP
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- You have already localized the genes to the same chromosome by deletion mapping, and now decide that the best way to accomplish the mapping is to conduct two simultaneous three-point testcross experiments. The genes you are investigating are as follows: N = round leaves, n = notched leaves; H = smooth stems, h = hairy stems; R = purple flowers, r = red flowers; B = grey seeds, b = black seeds; and Y = green pods, y = yellow pods. Earlier experiments you have done already established that gene B is in the middle of this gene cluster, so you design both three-point test crosses to include that gene. Cross #1 is designed as RrHhBb x rrhhbb while cross #2 is NnBbYy x nnbbyy. The results of both crosses are given in the table below. Based on the information given, determine the arrangement of these five genes including the position of each allele in the heterozygous fly and the distances between each pair of genes. (Hint: treat each experiment separately, knowing that gene B is in the…arrow_forwardImagine you are crossing two plants that have these two genotypes—Tt and tt. What are the two genotypes of the gametes that the Tt plant can make? What is the one genotype of the gametes that the tt plant can make? Set up a Punnett square to analyze the cross. Does the Punnett square need to have four boxes or just two? If you were crossing a TT plant with a tt plant, how many boxes would be necessary in a Punnett square?arrow_forwardGiven the following information, determine the inheritance of flower color in this plant and determine the genotypes of the parental individuals, which are from pure- breeding lines. CROSS 1 CROSS 2 purple X colorless all purple 9/16 purple colorless X red all purple as in Cross 1 F1 F1 F2 F2 3/16 red 4/16 colorlessarrow_forward
- Assume that the genes for seed color and seed shape are located on the same chromosome. A plant heterozygous for both genes is testcrossed wrinkled green with the following results: green, wrinkled 645 green, round 36 yellow, wrinkled 29 yellow, round 590 What were the genotypes of the parents, and how far apart are these genes?arrow_forwardThe results of a test cross of a plant that is heterozygous for three traits encoded by the genes D, R, and Q are summarized in the table (below), which shows the numbers of offspring that inherited each combination of alleles from the heterozygous parent. Use the data collected to make a genetic map of genes D, R, and Q. Make a map of the distance between these three genes. Report your results by entering the genetic distance between each pair of genes to the nearest 0.1 cM in the blanks below. Distance D-Q: Distance D-R: Distance Q-R: Alleles from heterozygous parent R d d D D D D d r R r r R r R Number q 474 Q 289 q 286 q 30 Q 475 Q 155 159 32 q Q cM см cMarrow_forwardConsider three yellow, round peas, labeled A, B, and C. Each was grown into a plant and crossed to a plant grown from a green, wrinkled pea. Exactly 100 peas derived from each cross were sorted into phenotypic classes as follows: A: 51 yellow, round 49 green, round B: 100 yellow, round C: 24 yellow, round 26 yellow, wrinkled 25 green, round 25 green, wrinkled What are the genotypes of plants A, B, and C? (Use gene symbols of your own choosing; be sure to define each one.)arrow_forward
- If a corn plant was heterozygous for kernel color and seed shape,what would be the genotype of the plant?arrow_forwardA diploid plant is heterozygous for two linked genes, A and B. Crossovers between the two genes occurs in ~10% of meiosis. Multiple crossovers are never observed in one cell undergoing meiosis. What fraction of the gametes produced by this diploid plant are expected to be recombinant type? O 5% O 10% 2.5% 25%arrow_forwardA horticulturist runs a test cross with an offspring (F1 generation) purple plant from Question 8. The phenotypic frequencies of the resulting offspring are 50% white and 50% purple. What is the true genotype of this offspring (F1 generation) purple plant?arrow_forward
- In corn, a triple heterozygote was obtained carrying themutant alleles s (shrunken), w (white aleurone), andy (waxy endosperm), all paired with their normal wildtype alleles. This triple heterozygote was testcrossed, andthe progeny contained 116 shrunken, white; 4 fully wildtype; 2538 shrunken; 601 shrunken, waxy; 626 white;2708 white, waxy; 2 shrunken, white, waxy; and 113 waxy.a. Determine if any of these three loci are linked and,if so, show map distances.b. Show the allele arrangement on the chromosomesof the triple heterozygote used in the testcross.c. Calculate interference, if appropriate.arrow_forwardHeight among red stalk plants is divided into tall, medium and short. From tests, scientists know it is governed by two alleles of the same gene. It is known that tall plants and short plants are homozygous. What is the genotype of the medium plant? Explain your reasoning in one to two sentences. A cross between a medium plant and a tall plant occurs. What would be the genotypes? Show your work/explain your reasoning. Can medium plants be true breeding (i.e. be bred with other medium plants to ALWAYS produce medium plants)? Explain your reasoning. étv MacBook Pro %23 $ & * 3 4 5 7 8. T Y D F H. Jarrow_forwardIn some plants a red pigment is synthesized from a colorless precursor. The addition of a hydroxyl group to the precursor molecule causes it to become purple. In a cross between two randomly selected purple plants, the following results were obtained. 94 purple 31 red 43 white Q:What are the genotypes of the two random purple plants? R/r; P/p X R/r; P/p R/r; p/p X R/r; p/p r/r; P/p X r/r; P/p r/r; p/p X r/r; p/p R/R; P/P X r/r; p/parrow_forward
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