Two true-breeding strains of corn with the genotypes cc and cc are crossed, where c = crunchy phenotype is dominant to c = soft phenotype. the resulting f1 corn are crossed, and the ratio of crunchy to soft phenotypes in the f2 generation is 3: 1. this is an example of:
a. non-disjunction.
b. a di-hybrid cross.
c. a mono-hybrid cross.
d. a test cross.
e. complementation.

The correct answer will be option-C

Explanation:

A mono-hybrid cross is a cross which is performed to study the pattern of inheritance involving or studying a single trait at a time.

In the given case, the trait studied is the texture of corn seed with two versions that are crunchy and soft phenotypes. The crosses made between them showed 3:1 ratio of crunchy to soft phenotypes in F₂ generation.

Since 3:1 ratio in F₂ generation is obtained in the monohybrid cross therefore, Option-C is the correct answer.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.