In Drosophila, the bar mutant is characterized by eyes that are restricted to a narrow, vertical bar. When a bar female is mated to a wildtype male, all the F1 flies are bar. However, when a bar male is mated to a wildtype female, 857 bar females and 905 wildtype males are observed. a. What is the mode of inheritance of the bar mutant?
b. What is the genotype of each of the flies in the two crosses above? Include the parents and the F1 generations.

See the answer below

Explanation:

a) The mode of inheritance of the bar mutant is X-linked and dominant.

Assuming that barness is represented by the allele B.

Bar female = or

Wild type male =

Bar female x wild type male:

                     x    

All of the F1 flies are bar because a single B allele is required for the trait to be expressed.

Bar male x wildtype female

                              x  

All the female offspring are barred while all the males are wildtype barred resulting in a 50/50 (857/905 is approximately 50/50) ratio of barred/wildtype offspring.

b) Genotypes of each of the cross above, including the parents and the F1 generations.

1.                x    

2.                 x  

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;