In drosophila, gray body color is dominant to ebony body color, while long wings are dominant to vestigial wings. assuming that the p1 individuals are homozygous, work the following crosses through the f2 generation, and determine the genotypic and phenotypic ratios for each generation. body color wing length e = gray v = long e = ebony v = vestigial

The phenotypic and genotypic ratios for each generation are determined below.

Explanation:

As we assume P1 individuals are homozygous (i.e EE, VV, ee, vv)

P1 Generation:

gray long winged         X       ebony vestigial winged

       EEVV                     X                  eevv

Gametes:

          E   V                    X                    e   v

F1 Geneation:

             EeVv          > All heterozygous gray long winged .

Ratio for genotype:

                                 100% heterozygous gray long winged

For F2 Generation:

               F1                 x                 F1

           EeVv               X                EeVv

Punnett Square for dihybrid cross:

               EV           Ev            eV          ev

 EV         EEVVEEVvEeVVEeVv      

Ev          EEVv         EEvvEeVvEevv      

eV         EeVV         EeVveeVVeeVv      

ev          EeVv  EevveeVveevv    

RATIO OF PHENOTYPE:

    Gray long winged : Gray short winged : Ebony long winged : Ebony short        winged

          9              :                  3                 :                   3                   :              1

 RATIO OF GENOTYPE:

   EEVV : EEVv : EeVV : EeVv : EEvv : Eevv : eeVV : eeVv : eevv

       1   :      2    :       1   :       2   :     4   :    2   :      1    :     2     :    1        

archaebacteria are found in in forest soil.

hope i spelled it right lol

hope i

-lavira: )

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.