A linkage map shows the distance between gene 'a' and gene 'b' to be 40CM, how many of each genotype catergory would you expect among 100 offspring if you cross a cis double heterozygote with a double homozygote recessive? Each gene has two alleles, A & a and B & b, respectively. A. O AB/ab; 40Ab/ab; 40 aB/ab; 20 ab/ab B. 10 AB/ab; 40Ab/ab; 40 aB/ab; 10 ab/ab C. 30 AB/ab; 20 Ab/ab; 20 aB/ab; 30 ab/ab D. 40 AB/ab; 20 Ab/ab; 20 aB/ab; 20 ab/ab

A linkage map shows the distance between gene 'a' and gene 'b' to be 40CM, how many of each genotype catergory would you expect among 100 offspring if you cross a cis double heterozygote with a double homozygote recessive? Each gene has two alleles, A & a and B & b, respectively. A. O AB/ab; 40Ab/ab; 40 aB/ab; 20 ab/ab B. 10 AB/ab; 40Ab/ab; 40 aB/ab; 10 ab/ab C. 30 AB/ab; 20 Ab/ab; 20 aB/ab; 30 ab/ab D. 40 AB/ab; 20 Ab/ab; 20 aB/ab; 20 ab/ab

Name: Why is the answer 30 AB/ab; 20 Ab/ab; 20 aB/ab; 30 ab/ab? How do I fin
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Description: Why is the answer 30 AB/ab; 20 Ab/ab; 20 aB/ab; 30 ab/ab? How do I find that answer and is there a formula I am supposed to use? A linkage map shows the distance between gene 'a' and gene 'b' to be 40CM, howmany of each genotype catergory would you e

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter15: Genomes And Genomics

Section: Chapter Questions

Problem 2QP: Hemophilia and color blindness are both recessive conditions caused by genes on the X chromosome. To...

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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.
A is dominant over a and B is dominant over b. Genes A/a and B/b assort independently. The parental cross (P) is between true- breeding (homozygous) strains (AA bb x aa BB). The resulting F1 offspring would be [Select ] A F1 x F1 cross gives the F2 generation. The ratio of phenotypes in the F2 generation can be described as [ Select ] In the phenotypic ratio, what number refers to individuals that are: dominant for both traits? [ Select ] recessive for both traits? [Select ] To what phenotypes do the "3"s in the ratio refer? [ Select ] > >
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?
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. F, 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 + e r m+ + m + r + e + m e + + + r Total 150 156 45 32 8 15 1000 1.Determine the genotypes of the P, and F, parents. 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.
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.
With three-point genetic mapping, we can look at the inheritance of three linked genes and determine their order and map distance relative to each other on the chromosome. Suppose Gene G, Gene J, and Gene M are linked. An organism with the genotype GgJjMm was mated to an organism with the genotype ggjmm. The following phenotypes were seen in the offspring: Dominant for all three 13 Dominant for G and J Dominant for G and M 84 Dominant for J and M 389 Dominant for G only 401 Dominant for J only 96 Dominant for M only Recessive for all three 12 a. What the alleles in the parental gametes? b. What are the alleles in the double crossover gametes? c. What gene is in the middle of the three? d. What is the map distance between Gene G and Gene J? (Show all your work.) е. What is the map distance between Gene J and Gene M? (Show all your work.)
In the video game Animal Crossing: New Horizons, flowering breeding is based in genetics. Each flower's color is determined by the genotype at three or four unlinked genes: R, Y, W, and S. The genotype of the elusive blue rose is RR YY ww ss. In the game, one way to get a blue rose is to cross two roses with the Rr Yy Ww ss genotype. A) What types of gametes and in what proportions will a Rr Yy Ww ss rose produce? B) In a cross Rr Yy Ww ss x Rr Yy Ww ss what are the possible offspring genotypes and at what frequency will they each appear? Show your work. C) What proportion of the offspring of the cross will be blue roses?
A 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 B
An individual heterozygous for d e f (D/d E/e F/f) was crossed to a homozygous recessive individual (d/d e/e f/f). The following offspring were recovered.d e + 39+ e f 372d + f 7+ + f 47+ e + 5d + + 412What is the correct order of these genes? EDF DFE DEF
In fruit flies, you are mapping three genes in a three point cross. The mutants are hairy body (h), sepia colored eyes (se) and female sterility (g). You cross a heterozygous parent with a homozygous recessive parent and obtain the following results: Type Number h se g. 5 + se + 450 + se g 27 ++g_ h se + + + + h + g. h + + TOTAL is the gene in the middle and the distance in map units between se and g is Oh; 16.4 se; 7.1 Oh; 7.1 70 82 7 327 32 1000 se; 16.4
Fruit color in eggplants is controlled by a single autosomal gene, R, with two alleles R and r When a homozygous plant that produces purple fruit (RR) is crossed with a homozygous plant that produces white fruit (rr), all F1 offspring produce violet eggplants. When the F1 progeny are testcrossed, the F2 progeny produce 160 violet eggplants, and 154 white eggplants. Design a hypothesis for the mode of inheritance of eggplant color (explicitly state your null and alternate hypotheses). Test this hypothesis using a chi-squared test. Use the chi-squared critical value table provided to determine the outcome of your statistical test. Explain the results obtained (i.e. interpret the p-value).
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