Its english label the following sentences as either active or passive. the cow jumped over the moon. the towel was handed to me by my mother. my paycheck came in the mail today. the shirt was hung on the clothesline by me.

The cow jumped over the moon.   Active

The towel was handed to me by my mother. Passive

My paycheck came in the mail today. Active

The shirt was hung on the clothesline by me. Passive

Explanation:

The cow jumped over the moon.   Active

The towel was handed to me by my mother. Passive

My paycheck came in the mail today. Active

The shirt was hung on the clothesline by me. Passive

In a passive sentence, the doer of the action is kept at the place of object while the receiver of the action is kept at the place of subject.  

On the other hand,  in an active sentence the doer of the action is the subject of the sentence while the  receiver of the action is object of the sentence.

For example –  

Active Voice

Ram gave a pen to Shyam

Ram is the subject while Shivam is the object

Passive Voice

A pen was given to Shyam by Ram

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.