7. A and B are linked genes. In a study of 100 offspring, 96 inherited chromosomes that did not crossover while 4 offspring inherited recombinant chromosomes (chromosomes produced by crossing over ). How far apart are the A and the B genes? (a) 4 map units (b) 6 map units (c) 9.4 map units (d) 94 map units (e) none of the above 8. If two genes are located on different chromosome types then (a) the mother's genotype will determine the phenotype of the son (b) the genes will not be inherited independently (c) parents that are heterozygous for both genes will produce children displaying a 9:3:3:1 ratio (d) one gene will mask or hide the effect of the other (e) none of the above 9. Some people with neurofibromatosis develop blemishes on their skin, while others are severely disfigured. Neurofibromatosis is an example of a gene that (a) is codominant (b) varies in its expressivity (c) is incompletely penetrate (d) is incompletely dominant (e) is linked 10. In the Four Qslock plant when red plants (RR) are crossed to white plants(rr), pink plants are produced. If a pink plant is crossed to a white plant, what fraction of the offspring will be pink? (a) 0 (b) 25% (c) 50% (d) 75% (e) none of the above

7. A and B are linked genes. In a study of 100 offspring, 96 inherited chromosomes that did not crossover while 4 offspring inherited recombinant chromosomes (chromosomes produced by crossing over ). How far apart are the A and the B genes? (a) 4 map units (b) 6 map units (c) 9.4 map units (d) 94 map units (e) none of the above 8. If two genes are located on different chromosome types then (a) the mother's genotype will determine the phenotype of the son (b) the genes will not be inherited independently (c) parents that are heterozygous for both genes will produce children displaying a 9:3:3:1 ratio (d) one gene will mask or hide the effect of the other (e) none of the above 9. Some people with neurofibromatosis develop blemishes on their skin, while others are severely disfigured. Neurofibromatosis is an example of a gene that (a) is codominant (b) varies in its expressivity (c) is incompletely penetrate (d) is incompletely dominant (e) is linked 10. In the Four Qslock plant when red plants (RR) are crossed to white plants(rr), pink plants are produced. If a pink plant is crossed to a white plant, what fraction of the offspring will be pink? (a) 0 (b) 25% (c) 50% (d) 75% (e) none of the above

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,...

See similar textbooks

Similar questions

Help me understand please……
1.Describe the rearrangement in chromosomes A-C. indicate the specific markers genes flanking the crossover/breakage points (e.g., a translocation with breakpoints between markers X and Z). 2.Chromosome rearrangements can be caused by crossing over between repetitive DNA sequences. Draw a picture similar to Figure showing how crossovers between repetitive sequences could have produced chromosome rearrangement A. indicate the location and orientation of the repetitive DNA segments relative to the marker genes.
5. In German Shepherd dogs, hair length and hip dyslpasia are determined by two different genes located on different chromosomes. In answering the following questions, use the letters D and d for fur length and H and h for hip dysplasia. Max, a long-haired dog with no hip dysplasia, was bred with Rin, a short-haired dog that was later found to have hip dysplasia. All of their children had long hair and hip dysplasia. a. Give the genotypes of the following: Мах Rin Their children (the F,) Buddy is a German Shepherd dog with short hair and was heterozygous for having hip dysplasia. b. What is Buddy's genotype? c. Give the genotypes of all of the gametes Buddy could produce.
Can someone help with this question?
SELECT ALL THAT APPLY What can be said of two genes on the same chromosome, 49 map units apart?
3. Six trials were run measuring recombination frequency between gene A and B. The following results were obtained Trial 1- 20% Trial 2-18% Trial 3- 22% Trail 4- 21% Trail 5-16% Trail 6-19% Calculate the Mean map distance between A and B 4. The relative location of four genes on a chromosome can be mapped from the following data on crossover frequencies Genes B and D C and A A and B C and B C and D Frequency of Crossover 5% 15% 30% 45% 50% Which of the following represents the relative positions of these four genes on the chromosome? a. ABCD b. ADCB C. CABD d. CBAD e. DBCA
1. Construct a map of a chromosome containing 4 genes. Some of the distances between these genes are listed below. The distance between genes R and C is 10 units The distance between genes C and P is 13 units The distance between genes P and R is 3 units The distance between genes S and C is 18 units The distance between genes S and R is 8 units SPRC D. What two genes would likely have the most recombination events between them? S and C P and R E. What two genes would likely have the fewest recombination events between them? F. How many units are between S and P?
2. An organism is 2n=4 with genotype AaBbEe. Genes A and B are close together on the larger chromosome, and gene E is on the smaller chromosome. a. Using a vertical metaphase plate, draw the two independent orientations of this AaBbEe cell in Metaphase I of Meiosis. b. Label alleles on all chromatids. c. Write the alleles in each possible gamete on the lines below each orientation. OR O'Q ( Gametes:
Genes A and B are 7.5 map units apart on one chromosome. Genes C and D are 8.0 map units apart on a second non-homologous chromosome. • The recombination frequency between A and B is? • The recombination frequency between A and C is? • The recombination frequency between C and D is? • The recombination frequency between B and D is?