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        

dude really come on

explanation:

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.