Maize (corn) is used for an experiment. The P1 cross of true breeding starchy purple x sweet colorless resulted in all starchy and purple F1. The F2 is as follows: 88 starchy and purple, 32 starchy and colorless, 29 sweet and purple, 17 sweet and colorless. How many genes and how many alleles per gene (respectively) are most likely involved? It's 4, 2 It's 1,4 It's 2, 2 It's 2, 4 It's 1,2

Maize (corn) is used for an experiment. The P1 cross of true breeding starchy purple x sweet colorless resulted in all starchy and purple F1. The F2 is as follows: 88 starchy and purple, 32 starchy and colorless, 29 sweet and purple, 17 sweet and colorless. How many genes and how many alleles per gene (respectively) are most likely involved? It's 4, 2 It's 1,4 It's 2, 2 It's 2, 4 It's 1,2

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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you are a zoologist working with Tigers. Their dominant traits are Bright orange fur(B+), Long tails (L+), and sharp teeth (T+) . You perform the following testcross with an individual with recessive versions of all 3 of the traits. P: B+ L+ T+/B+ L+ T+ x B L T /B L T F1(all identical): B+ L+ T+/ B L T Test Cross Progeny 3435 B L T 3069 B+ L+ T+ 1115 B+ L T 1022 B L+ T+ 426 B L T+ 428 B+ L+ T 114 B L+ T 102 B+ L T+ Total progeny= 9711 question: What is the distance between B and T? Give the answer as map units (mu) with 2 decimal places (ie 12.34)
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You have calculated the interference value for a given triple cross mapping experiment to be 20%. What does this mean? 20% more double crossovers occurred than expected O 20% fewer double crossovers occurred than expected 80% more double crossovers occurred than expected 80% fewer double crossovers occurred than expected
In one of Gregor Mendel's first experiments, he crossed a purple-flowered pea plant 3. (PP) with a white-flowered pea plant (pp). Purple Phenotype Probability (%) Flowers Genotype Probability (%) P P 17 PP Purple Flowers: 18 Pp White Flowers: 19 pp 20 Genetics Punnett Squares White Flowers
A pea plant believed to be heterozygous was selfed and produced pods with the followingphenotypes: 26 constricted yellow73 constricted green83 inflated yellow251 inflated green a. Using the letters A and B, assign alleles to the different traits.b. Determine whether the ratio of pea pods support the hypothesis that the plant isheterozygous.
Punnett Squares Practice Monohybrid Crosses DIRECTIONS: All these genetic probiems deal with pea plants and heir traits. Use the following kay for ail problems. Put the gametes for the 1st parent of each cross along the top, and the gametes for the 2nd parent along the left side. T= Tall ( = Short S= Smooth Seed = Wrinkled Seed G= Green Pod Y= Yellow Seed P= Purple Flower g= Yellow Pod 2. TT x TE y- Green Seed A= White Flower 1. PP x PA 3. Sa x Sa 4. yy x yy 5. Gg x Gg PP PA AP YY Yy 99 GG Gg gg SS Sa sa 8. heterozygous yellow seed x green seed TT TE 6. hybrid tall x short Te x t 7. purebrid tall x short TT x 9. hybrid green pod x hybrid green pod 10. hybrid tall x purebred tall YY Yy 99 13. heterozygous purple flowers x TT T TT TE GG Gg gg TT Te 11. purebred purple flowers x white flowers 12. hybrid purple flowers x white flowers 14. hybrid smooth seeds x hybrid smooth seeds 15. short plant x short plant white flowers PP PA AP PP PA AA phenotype ratios: PP PA AE Ss Se TT TE Purple…
An otto hemp variety with the genotype RRbb is crossed with a Kush hemp variety rrBb (Given that RR is homozygous resistance to mildew, BB is homozygous large buds). Which of the following shows the correct alleles that are crossed? Rb, Rb, Rb, Rb X RB, RB, Rb, Rb Rb, Rb, Rb, Rb X rB, rB, rb, rb Rb, Rb, Rb, Rb X RB, RB, Rb, Rb RB, RB, Rb, Rb X RB, RB, Rb, Rb
The remaining questions go together. You are given a pea that produces round, yellow seeds (both dominant traits), but its genotype is unknown. You conduct a testcross to determine the genotype at both loci, and find that the offspring have the following ratios of phenotypes: 4 round, yellow, 4 round, green, 4 wrinkled, yellow, 4 wrinkled, green What is the genotype of the individual of known genotype in the testcross? rryy O RRYY O RrYy rrYy R_Y_ Rryy
. In corn, three dominant alleles, called A, C, and R,must be present to produce colored seeds. GenotypeA/− ; C/− ; R/− is colored; all others are colorless.A colored plant is crossed with three tester plants ofknown genotype. With tester a/a ; c/c ; R/R, the coloredplant produces 50 percent colored seeds; with a/a ;C/C ; r/r, it produces 25 percent colored; and withA/A ; c/c ; r/r, it produces 50 percent colored. What isthe genotype of the colored plant?
In pea plants yellow seed color, (GG) and round seed shape (WW) seeds are dominant traits, while green color or (gg) wrinkled shape (ww) seeds are recessive traits. You cross a pure breeding plant with yellow wrinkled seeds to a pure breeding plant with green round seeds to generate F1s. When you perform a reciprocal cross you get the same results. You take an F1 male and an F1 female and generate an F2 population. Of all the F2 offspring you count 18 that have yellow wrinkled seeds. Based on this information, how many F2 offspring do you expect to display only dominant traits? a) 72 b) 54 c) 18 d) 24 e) 6
Can you show the cross on how to get the answers? What is the ratio that is expected with independent assortment? Can you explain anything else related to it ? Nonindependent assortment
Corn is bred for traits that improve its usefulness for specific purposes. For example, it may be bred to grow in various climates, to produce more corn, or to be better tasting. These traits depend on the alleles inherited by the corn plant. Suppose that you are studying the color and texture of kernels on a cob. Kernels can be either purple (R), which is the dominant color, or yellow (r), which is the recessive color. Kernels can also be smooth (T), which is the dominant texture, or wrinkled (t), which is the recessive texture. In this lab, you will predict the inheritance of alleles for two particular traits in a dihybrid cross by using a Punnett square.