Chapter 44, Problem 9TYPSS

Summary Introduction

To review:

The existence of the pheromones on the basis of the data provided in the question.

Introduction:

The regular natural changes that occur in the reproductive system of women, specifically in the ovaries and uterus, are referred to as menstrual cycle. These events are necessary for the pregnancy to occur in women.

The graph given in the problem provides the data on the date of onset of the menstrual cycle of a group of women. The y-axis of the graph represents the mean difference between the onset of a particular woman’s menstrual cycle and the average onset date of the rest of the women, while the x-axis represents the time period.