Question: A maternal effect gene in Drosophila, called torso, is found as a functional allele (torso+) and a nonfunctional, recessive allele (torso) that prevents the correct

A maternal effect gene in Drosophila, called torso, is found as a functional allele (torso+) and a nonfunctional, recessive allele (torso−) that prevents the correct development of anterior- and posterior-most structures. A wild-type male (torso+ torso+) is crossed to a female of unknown genotype. This mating produces larvae of which 100% are missing their anterior- and posterior-most structures and therefore die during early development. What are the genotype and the phenotype of the female fly in this cross? What are the genotypes and phenotypes of the female fly’s parents?

Step by Step Solution

★★★★★

3.39 Rating (155 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Given The wildtype male has genotype torso torso The offspring from the cross between the wildtype m... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Structural Analysis Questions!

A maternal effect gene exists in a dominant N (normal) allele and a recessive n (abnormal) allele. What would be the ratios of genotypes and phenotypes for the offspring of the following crosses? A....

Suppose that a maternal effect gene affects the anterior morphology in house flies. The gene exists in a dominant (functional) allele, H, and a recessive (nonfunctional) allele, h, which causes a...

Suppose a maternal effect gene exists as a functional dominant allele and a nonfunctional recessive allele. A mother with the disorder produces all offspring without the disorder. Explain the...

Embryonic development is initiated by maternal effect gene products confined to the posterior end of embryo. These gene products set off a cascade of activation of zygotic genes starting at the...

you are conducting a screen for genes taht rpoduce embryonic lethiality in drosophila. you suspect oen of your allels is recessive mutation that disrupts a maternal effect gene which which results in...

Figure 5.1 describes an example of a maternal effect gene. Explain how Sturtevant deduced a maternal effect gene based on the F2 and F3 generations.

in situ hybridization reveals that the mRNA of a gene you are interested in is not present in Drosophila embryos before 3 hours of development but is found in 3 - 5 hour old embryos in a broad region...

Describes two blotting methods (i.e., Northern blotting and Western blotting) used to detect gene products. Northern blotting detects RNA and Western blotting detects proteins. Suppose that a female...

Chapter 20 describes three blotting methods (i.e., Southern blotting, Northern blotting, and Western blotting) used to detect specific genes and gene products. Southern blotting detects DNA, Northern...

Figure 5.1 illustrates an example of a maternal effect. Explain how Sturtevant deduced a maternal effect gene based on the F2 and F3 generations. Figure 5.1 Parental generation F generation F...

Shott, a public limited company, set up a wholly owned foreign subsidiary company, Hammer, on 1 June 1999 with a share capital of 400 000 ordinary shares of 1 dinar. Shott transacts on a limited...

On January 1, 2010, Franklin Company had a retained earnings balance of $206,000. During 2010 the following events occurred: 1. Treasury stock (common) was acquired at a cost of $14,000. State law...

Critically examine the concept of controlled risk - taking, discussing its significance and the key strategies required for its effective implementation within the banking sector

An investor sells a stock short in July and its price declines in Novemberthe position has generated a profit. However, the individual does not want to close the position and realize the profit...

Draw the intermediate carbocation that is formed when each of the following compounds is treated with HBr: a. b. c. d.

Calculate GR???? for the reaction CO(g) + 1/2O 2 (g) CO at 298.15 K. Calculate G o R at 600. K assuming that H o R is constant in the temperature interval of interest.

When 1-methoxy-2-methylpropene is treated with HCl, the major product is 1-chloro-1-methoxy-2-methylpropane. Although this reaction proceeds via an ionic mechanism, the Cl is ultimately positioned at...

Match the steps for creating the draft presentation slide deck with their correct descriptions, according to our textbook. First [ Choose ] Write notes for each slide Second Insert placeholder slides...

Consider the following table: Scenario Severe recession Mild recession Normal growth Boom Probability 0.10 0.20 0.40 0.30 Stock Fund Rate of Return -36% -16% 21% 26% Bond Fund Rate of Return -9% 15%...

Crane Dental Supply Company issued $ 2 2 6 0 0 0 0 of 5 % , 5 - year bonds at 9 5 , which pay interest annually. Assuming straight - line amortization, what is the total interest cost of the bonds? $...