The smallest piece of genetic information that is the key functional unit in hereditary transmission is the
A) gene.
B) chromosome.
C) hormone.
D) DNA.

Question

Quizplus · Accepted Answer

Genes are the basic unit of heredity and are the smallest functional unit that carries genetic information. They are composed of DNA and contain the instructions for making specific proteins, which determine traits like eye color, hair type, and disease susceptibility. Chromosomes are composed of many genes and are only visible during cell division. Hormones are chemical messengers that regulate bodily functions but do not directly play a role in hereditary transmission. DNA is the genetic material that makes up genes and chromosomes.

The Smallest Piece of Genetic Information That Is the Key