Question

In Drosophila, yellow bodies (y ) and white eyes (w ) are both caused by recessive...

In Drosophila, yellow bodies (y ) and white eyes (w ) are both caused by recessive X-linked alleles. The normal alleles (y+ amd w+ ) cause tan bodies and red eyes, respectively. A y w female is mated to a y+ w+ male and the F1 progeny are allowed to mate with each other. Two hundred F2 were observed and they are: 55 y w; 45 y w+; 45 y+ w; 55 y+ w+. What is the chi-square value for the test for chi-square test for goodness of fit of the null hypothesis of no linkage? (Recall that the chi-square statistic is the sum, for all classes, of (O-E)2/E.)

Multiple Choice

  • 20

  • 2.0

    Correct

  • 45

  • 0.4

  • 1.0

  • 90

  • 0.5

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Null hypothesis- genes for body colour and eye colour shows independent assortment.

Please rate high.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is...
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is epistatic over brown and scarlet. White eyes can also result by crossing brown-eyed females (bw) with scarlet eyed males (st) (that is, when both mutant alleles are present). A cross is made between white-eyed females with the genotype w//w (otherwise, homozygous for wild type alleles) and white-eyed males hemizygous for the wild type allele (w+ ). List the expected: a) Genotypes of the P1...
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is...
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is epistatic over brown and scarlet. White eyes can also result by crossing brown-eyed females (bw) with scarlet eyed males (st) (that is, when both mutant alleles are present).A cross is made between white-eyed females with the genotype w//w (otherwise, homozygous for wild type alleles) and white-eyed males hemizygous for the wild type allele (w+ ). List the expected: a) Genotypes of the P1 and...
Please answer all the questions, they're related The autosomal recessive allele bw, for brown eyes in...
Please answer all the questions, they're related The autosomal recessive allele bw, for brown eyes in Drosophila interacts with the X-linked recessive allele, v, for vermilion eyes, since flies that are recessive for both genes have white eyes. Wild type flies have red eyes. What eye color phenotypes, in what proportions, would be expected in the progeny from a cross of a white-eyed female and a brown eyed male?  Choose the best answer. Select one: a. all females with brown eyes,...
P1: A female heterozygous for white (w), yellow (y) and miniature (m) – (all 3 recessive...
P1: A female heterozygous for white (w), yellow (y) and miniature (m) – (all 3 recessive mutations) is crossed to a male who is mutant for all three traits. The F1 male progeny phenotypes are: + + m 2278 w y + 2157 w y m 1203 + + + 1092 + y m 49 w + + 41 + y + 2 w + m 1 Total = 6823 Was there positive or negative interference in the number of...
The white eyes w gene of Drosophila is located on the X chromosome. A fly will...
The white eyes w gene of Drosophila is located on the X chromosome. A fly will be ‘hemizygous’ for the w gene if it has which karyotype? Group of answer choices XX XXY XY Which of the following determines the correct segregation of X and Y chromosomes during meiosis I in humans (males): Group of answer choices Lack of homology between X and Y Presence of “pseudoautosomal” (PAR) regions shared by X and Y The presence of the SRY gene...
In monkeyflower, an allele for yellow flowers (Y) is dominant over an allele for white flowers...
In monkeyflower, an allele for yellow flowers (Y) is dominant over an allele for white flowers (y). At an independently assorting locus, an allele for entire petals (E) is dominant over an allele for fringed petals (e). A plant that is homozygous for yellow and entire petals is crossed with a plant that is white and fringed. A resulting F1 plant is then crossed with a plant that is white and fringed, and the following progeny are produced: 20 yellow...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT