In tomatoes, one gene determines whether the plant has purple (P) or green (G) stems, and a separate, independent gene determines whether the leaves are “cut” (C) or “potato” (Po). Five matings of tomato-plant phenotypes give the following results: Parental Number of progeny Mating phenotypes P, C P, Po G, C G, Po 1 P, C × G, C 323 102 309 106 2 P, C × P, Po 220 206 65 72 3 P, C × G, C 723 229 0 0 4 P, C × G, Po 405 0 389 0 5 P, Po × G, C 71 90 85 78 a. Which alleles are dominant? b. What are the most probable genotypes for the parents in each cross?

In tomatoes, one gene determines whether the plant has purple (P) or green (G) stems, and a separate, independent gene determines whether the leaves are “cut” (C) or “potato” (Po). Five matings of tomato-plant phenotypes give the following results: Parental Number of progeny Mating phenotypes P, C P, Po G, C G, Po 1 P, C × G, C 323 102 309 106 2 P, C × P, Po 220 206 65 72 3 P, C × G, C 723 229 0 0 4 P, C × G, Po 405 0 389 0 5 P, Po × G, C 71 90 85 78 a. Which alleles are dominant? b. What are the most probable genotypes for the parents in each cross?

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 5RQ: Imagine that you are performing a cross involving seed texture in garden pea plants. You cross...

See similar textbooks

Similar questions

In a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding recessive plant with the genotype mm rr ss. The offspring genotypes are as follows: Genotype Number Mm Rr Ss 687 Mm Rr ss 5 Mm rr Ss 68 Mm rr ss 196 mm Rr Ss 185 mm Rr ss 72 mm rr Ss 8 mm rr ss 679 Total 1900 1. What is the gene order of these linked genes?
Cross Cross A Cross A Cross B Cross B Phenotype F1 generation F2 generation F1 generation F2 generation Male red eyes 132 150 0 99 Female red eyes 135 295 110 101 Male white eyes 0 147 105 93 Female white eyes 0 0 0 95 Using “+” to indicate the wildtype red-eyed allele and “w” to indicate the mutant white-eyed allele, state the genotypes of the following: Wildtype red-eyed and white-eyed parental flies from cross A and cross B. Males and females from the F1 generation flies from cross A and cross B Males and females, F2 generation flies from cross A and cross B.
Fine spines (s), smooth fruit (tu), and uniform fruit color (u) are three recessive traits in cucumbers. A cucumber plant heterozygous for all three traits is used in a test cross, and the following progeny are produced from this test cross. Type Number SU TU su Tu Su Tu su tu SU tu s U tu s U Tu Su tu TOTAL 2 70 21 4 82 21 13 17 230 Identify the order of the genes on the chromosome:
In garden pea plants, tall stem height (T) is dominant over short stem height (t), and green pod colour (G) is dominant over yellow pod colour (g). Some Genotypes of Pea Plants TTGG TTGg TTgg TtGG TtGg Ttgg ttGG ttGg ttgg Identify the correct genotypes listed above for the pea plant phenotypes described below. Phenotype Number Pure breeding tall, green pod pea plant Answer Pea plant used for a test cross Answer Heterozygous tall and green pod pea plant Answer Yellow pod heterozygous tall pea plant Answer
Below is the linkage map for genes y, sh and c that are in cis arrangement. Interference is 0.4 and the total progeny is 2000. Determine the parentals, SCOI, SCO II, and DCO products and the estimated number of individuals for each. y-------------sh-- 18% 28%
In Drosophila (fruit flies), jammed wings (J), daughterless (da), curly wings (Cy), star eyes (S), and a black body (b) are determined by genes located on the same chromosome. Gene Combination Recombination Frequency J and Cy 34.9 J and da 1.7 S and Cy 4.8 Cy and b 42.4 S and da 38 b and S 47.2 What is the map unit distance between b and da?Answer map unitsRecord your answer as a value rounded to one decimal place.
*Genes A and B are linked. Individual plants homozygous for different combinations of these genes (AABB, aabb, AAbb, aaBB) were crossed at random to produce Fi plants. The F₁ plants were self pollinated to produce the F2. The F₂2 progeny from six of the F₁ self pollinations are listed below. F₁ Plant 1 2 3 4 S 2. Number of F₂ plants in each phenotypic class AB Ab aB 98 10 34 3. 64 106 50 99 25 8 104 23 31 a. Determine the genotype of the F₁ that produced each F2 population. 1. ab 32 18 MacBook Pro 36 2 5. 6. b. Calculate the recombination frequency between genes A and B. 100 Linkage Problem Set 13. Assume that height and eye color are inherited as follows. T- tall, t- short and B- blue, b- brown. Genes T and B are linked on chromosome 1, 20 map units apart. A tall brown eyed woman marries a short blue eyed man. They have a son that is tall and blue eyed. This man marries a short brown eyed woman. a. Diagram the arrangement of the alleles on the two chromosome 1's of the tall blue eyed…
In a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding recessive plant with the genotype mm rr ss. The offspring genotypes are as follows: Genotype Number Mm Rr Ss 687 Mm Rr ss 5 Mm rr Ss 68 Mm rr ss 196 mm Rr Ss 185 mm Rr ss 72 mm rr Ss 8 mm rr ss 679 Total 1900 1. What is the interference value for this data set?
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.
Dominant and recessive alleles of a gene in garden peas, G and g, cause seeds to be yellow and green, respectively. Dominant and recessive alleles, F and f, of another gene cause seeds to be spotted or not with violet color, respectively. A plant of genotype GGFF is crossed with a plant of genotype ggff, and the F1 are allowed to self-fertilize. The phenotypes and numbers of F2 progeny are shown below: Phenotype of F2 Number yellow, spotted 89 green, spotted 31 yellow, not spotted 29 green, not spotted 11 Are the G,g and F,f genes linked?
In sesame plants the one-pod condition is dominant (P) to the three-pod condition (p), and a normal leaf (L) is dominant to the wrinkled leaf (l). Pod type and leaf type are inherited independently. Determine the genotypes for the parent producing offspring: 318 one-pod, normal leaf and 98 one-pod, wrinkled leaf PPLl x PPLl, PPLl x PpLl, or PPLl x ppLl ppll x ppLl PPLL x PPLL ppll x ppll
In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough eyes (r) were crossed with true- breeding wild-type males. In the F₁, all offspring had wild-type phenotypes. F₁ offspring were testcrossed to miniature, ebony, rough individuals and 1000 offspring were counted, shown in the table below. Phenotype Offspring m e r 310 + + + 284 + er 150 m + + 156 + r 45 e + 32 m e + 8 15 + + r Total 1000 EE+E m 1.Determine the genotypes of the P₁ and F₁ parents. 1 2.Determine the sequence of the three genes and the map distance between them. 3.Are there more or fewer double crossovers than expected? 4.Calculate the interference.