Carmen has always done well in her math courses and even though she has never taken a statistics class before, she is confident she will do well in the one she just signed up for next semester. In this example, Carmen shows evidence of having

During meiosis, at times chromosomes sometimes fail to divide properly, and as a result, the person may have 45 or 47 chromosomes. Which of the following best describes this phenomenon?

a. chromosomal disorders b. genetic misprinting c. mitosis error d. gene displacement

In a __________, organisms are particularly susceptible to certain kinds of stimuli in their environments, but the absence of those stimuli does not always produce irreversible consequences

a) sensitive period b) continuous change c) critical period d) discontinuous change