Cross a heterozygous pink flower with a white flower. Give the phenotype and genotype ratios.

RR= red

Rr=pink

rr=white

use a the punnet square method

               r            r

R          Rr            Rr

r          rr              rr

Genotype

50%  H o m o zygous rr  (wont let me post it otherwise)

50% hetrozygous Rr

phenotype

50% white

50% pink

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.