For centuries, people have been selectively breeding plants and animals to have certain desirable traits. gregor mendel predicted the existence of units of hereditary information that control those traits. what do we call those units of hereditary today?
(a) chromosomes
(b) proteins
(c) genes
(d) nuclei

The correct answer would be (C) genes.

Genes are known as the unit of heredity which codes for traits of different characters of the organism.

They are the coding sequence of the DNA strand that is, they code for a particular protein.

They are generally present in pairs, one come from mother while other comes from father. These alternative forms are termed as alleles.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: