Describe heredity and evolution in humans?

Expert Answers
mr-angel eNotes educator| Certified Educator

Heredity is the passing of traits and information from Parents to their offspring. 

A division of Biology called Genetics is the study of heredity.

Evolution is the changing of genetic material in a population over time.  Many people jump to the conclusion that "Evolution means humans came from monkeys."  This is a very narrow view of the definition.  Evolution really states that the genetics of a population change over time, and that these changes, given enough time, can result in changed traits in the population.

krishna-agrawala | Student

These are really two separate questions which are quite unrelated. In response to the first question I will just say that humans evolved from some kind of apes over a period of 5 to 10 million years.

Coming to the second question, I will explain this in more detail.  The sex of a baby is determined by the kind of male sperm that combines with a female egg to start the process of development and growth of a baby. Humans have two type of chromosomes X chromosomes and Y chromosomes. The female egg always contains an X chromosomes, but the male sperm can have either of X or Y chromosomes. The baby will be a boy when the male sperm fertilizing with female egg has a Y chromosome, and a girl when it has an X chromosome.