What was the genotype of the original heterozygous females

Assignment Help Biology
Reference no: EM13143239

Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Phenotype Number wild-type 67 ebony 8 ebony, scarlet 68 ebony, spineless 347 ebony, scarlet, spineless 78 scarlet 368 scarlet, spineless 10 spineless 54 (a) What indicates that the genes are linked? (b) What was the genotype of the original heterozygous females? (c) What is the order of the genes? (d) What is the map distance between e and st? (e) Between e and ss? (f) What is the coefficient of coincidence? (g) Diagram the crosses in this experiment.

Reference no: EM13143239

Questions Cloud

How large sample is needed to achieve power : Study have in distinguishing between case-fatality rates in 1990 and 2000-2005 if a two-sided test with significance level .05 is planned? B. How large a sample is needed in the previous problem to achieve 90% power?
Determine the mass ratio : Determine the mass ratio, For a vehicle in gravitationless space, determine the mass ratio necessary to boost the vehicle velocity by 1600 m/sec
Factors that would affect the risk of material mistatement : During 2009, HS opened a branch office in the metropolitan area 30 kms from its principal place of business. Although this branch is not yet profitable ( as a result of competition from several well-established banks), management believes it will ..
Calculate the concentration of cro4 2- : You have 75.0 mL of a 2.50 M solution of Na2CrO4(aq). You also have 125 mL of a 1.52 M solution of AgNO3(aq). Calculate the concentration of CrO4 2- after the two solutions are mixed together.
What was the genotype of the original heterozygous females : Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Phenotype Number wild-type 67 ebony 8 ebony, scarlet 68 ebon..
After taking a random : After taking a random start between 1 and 20 and then taking every 20th element from the sampling frame, Smith learned that 40% of the sample believed the company's president was doing a good job. The calculated standard error was 3 percent. What was..
Photovoltaic array and under insolation conditions : Photovoltaic array, Under insolation conditions of 500 W/m^2 (direct sunlight), and 10% solar cell efficiency
Who also acts as chief executive officer : HS's board of directors is controlled by George Waltson, the majority shareholders, who also acts as the chief executive officer.
Non-controlling interest in kent net income : X-Beams Inc. owned 70% of the voting common stock of Kent Corp. During 2006, Kent made several sales of inventory to X-Beams. The total selling price was $180,000 and the cost was $100,000. At the end of the year, 20% of the goods were still in X-..

Reviews

Write a Review

Biology Questions & Answers

  Describe the two scientific models for evolution

What is the basic theory of biological evolution and what evidence is there to support this theory? Describe the two scientific models for evolution.

  Draw and label the regulatory regions

Draw and label the regulatory regions and transcriptional regions of a typical prokaryotic and a typical eukaryotic gene.

  Somatic cells of chimpanzees have 48 chromosomes

Describe what you observed in your cheek smear wet mount, direct stained slide, and indirectly stained slide. What were similarities and differences. Describe what you observed in your yeast wet mount, direct stained slide, and indirectly stained sli..

  How the appearance of a small amount of active m-cdk

Describe the function of Cdc25 and Wee1 and why deficit of Cdc25 or excess of Wee1 can cause G2 arrest.

  Estimate the genotypic frequencies

Given the following allele frequencies estimate the genotypic frequencies and explain how you calculate the genotypic frequencies from the allele frequencies for both generations it would be.

  Estimate the pressure gradient required to maintain cardiac

A patient has a stenotic mitral valve which has a reduced effective orifice area of 1.0 cm^2. The systolic ejection period is 330 milliseconds with a heart rate of 70 beats/min.

  Find the genotypes of parents in the cross

Assume you are studying the inheritance of flower color and seed color in navy beans and the yellow flower color is dominant over white and white seed color is dominant over beige.

  Demonstrate the comparative effect of uv

The purpose of this exercise is to demonstrate the comparative effect of UV on three bacterial populations. This could have been accomplished without a cardboard or plastic cover. Why was the cover used.

  What are several of the benefits of squeezing so much data

Comparisons of amino acids sequences can shed light on the evolutionary divergence of related species. Would you be expecting all the proteins of a given set of living species to demonstrate the same degree of divergence.

  Genetics question - guinea pigs

In guinea pigs, white coat is recessive to black coat avy hair is recessive to straight hair. A breeder crosses a female guinea pig that is homozygous for white coat.

  Effects of cholesterol on the people

Determine what can a disease like familial hypercholesterolemia tell us about the effects of cholesterol on the people without the disease?

  Draw a diagram of the poly-adenylation process

Draw a diagram of the poly-adenylation process. How do we know that the Poly A tail is added post-transcriptionally?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd