EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Textbook Question
Chapter 13, Problem 5U
How many map units separate two alleles if the recombination frequency is 0.07?
a. 700 cM
b. 70 cM
c. 7 cM
d. 0.7 cM
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The following recombination frequencies are calculated for four linked genes in the image attached:
What is the frequency of crossing-over between A and D?
a. 8%
b. 6%
c. 15%
d. 11%
What is the most likely order of the linked genes R, S, and T if the distance between R and S is 22 cM, the distance between S and T is 8cM, and the distance between R and T is 14 cM?
A.
R S T
B.
T R S
C.
Cannot be determined
D.
S T R
During a dihybrid cross involving two linked genes (two-point testcross), 20 flies showed recombinant phenotypes, whereas 480 flies showed the parental phenotypes. How far apart are these linked genes from each other?
a. 20 cM
b. 7.5 cM
c. 4 cM
d. 0.04 cM
e. 8 cM
Chapter 13 Solutions
EBK BIOLOGY
Ch. 13 - Why is the white-eye phenotype always observed in...Ch. 13 - In an organisms genome, autosomes are a. the...Ch. 13 - What cellular process is responsible for genetic...Ch. 13 - The map distance between two genes is determined...Ch. 13 - How many map units separate two alleles if the...Ch. 13 - How does maternal inheritance of mitochondrial...Ch. 13 - Which of the following genotypes due to...Ch. 13 - Prob. 1ACh. 13 - As real genetic distance increases, the distance...Ch. 13 - Down syndrome is the result of trisomy for...
Ch. 13 - Genes that are on the same chromosome can show...Ch. 13 - The A and B genes are 10 cM apart on a chromosome....Ch. 13 - During the process of spermatogenesis, a...Ch. 13 - Color blindness is caused by a sex-linked,...Ch. 13 - Assume that the genes for seed color and seed...Ch. 13 - A low frequency of calico cats are male (about...
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- Under what situation would you expect haplotype frequencies to remain unchanged from one generation to the next? a. crossing over between two loci is extremely rare b. the two loci are in linkage disequilibrium c. the recombination rate is greater than zero d. the coefficient of LD is either 0.25 or -0.25arrow_forwardAn individual with two different alleles at a locus is a(n) Group of answer choices A. clone B. hemizygote C. homozygote D.heterozygotearrow_forwardWhich recombination frequency corresponds to independent assortment and the absence of linkage? a. 0 b. 0.25 c. 0.50 d. 0.75arrow_forward
- Which recombination frequency corresponds to perfect linkage and violates the law of independent assortment? a. 0 b. 0.25 c. 0.50 d. 0.75arrow_forwarda. Which progeny are the parental types? How can you tell?b. Which progeny are the recombinants? How can you tell?c. Do the results of this test cross support linkage of the traits? What is the % recombination?arrow_forwardA geneticist determines that the order of four genes on a specific chromosome is CABD because the recombination frequencies were 35% for C-D, 24% for A-D, 23% for B-D, and 10% for A-B. What has the geneticist constructed? A. a physical map B. a karyotype C. a cytogenic map D. a linkage maparrow_forward
- page Two genes are 70 MU apart. How often would you expect to see recombinant progeny? Select one: O a. 50% O b. 30% O c. 25% O d. 70% O e. 100% Search or type URLarrow_forwardA cross is made between a heterozygote, +++/abc, and a recessive homozygote, abc/abc. Analysis of the progeny gave the following results: + + + 450 + + C 10 a + c 70 + b c 210 + b + 65 a + + 200 a bc 460 ab + 15 What is the map distance between the a and c genes? O 25.12 map units O 27.71 map units O 29.39 map units O 32.53 map units O None of the above Next» • Previous PgUp End F10 PrtScn Home 23 F2 DII F3 F4 F5 FB F9 F1 @ %23 %24 1. 3. 4. 8. To W R. Y U S D G H. C M Barrow_forwardA poultry grower has 2 breeds of chicken, averaging 9 and 5 lbs. inweight. The F1 of the cross between is quite uniform, averaging 7lbs. Of the F2 progeny, 0.4% is as heavy as either parent. a. How much does each effective allele contribute to weight? b. What is the number of polygenes pairs involved in thesecrosses? c. If only those with an average weight of 6-8 lbs. are marketable, whatpercentage of the offspring will yield profit for the grower?arrow_forward
- What do you call the two new allele combinations generated from the cross over? A. linker B. recombinant C. allele D. genearrow_forwardafter crossing two tall pea plants, a scientist notes that approximately3/4 are tall, while approximately 1/4 are short. The scientist is noting the offspring' a. phenotypes b. genotypes c. wild types d. karyotypesarrow_forwardThe recombination rate of two linked genes is 18%. A testcross is performed between AB/ab and ab/ab genotypes. What is the probability of Ab/ab progeny? A. 0.25 B. 0.50 C. 0.18 D. 0.09 E. 0.41arrow_forward
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