HUMAN BIOLOGY
16th Edition
ISBN: 9781260233032
Author: Mader
Publisher: RENT MCG
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 17, Problem 1TC
Female athletes who train intensively often stop menstruating.
The important factor appears to be the reduction of body fat below a certain level. Give a possible evolutionary explanation tor a relationship between body fat in females and reproductive cycles.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Female mammals undergo continuous reproductive cycles during their reproductive life. In the sense of offspring production, what is the benefit of these continuous cycles?
In the animal kingdom, only primates menstruate. Other mammalscome into season, or “heat,” during certain times of the year, whilestill others only ovulate after having sex. What would be somepossible advantages of a monthly menstrual cycle?
Mammalian sperm don’t live very long after ejaculation.Therefore, for a rhino cow to become pregnant, the sperm must be placed in her vagina or uterus, whether by mating or by artificial insemination, at about the same time that ovulation occurs.The simplest way to ensure correct timing is to induce ovulation and have mating or artificial insemination the same day. How might ovulation be induced, in rhinos or in other mammals?
Chapter 17 Solutions
HUMAN BIOLOGY
Ch. 17.1 - List the functions of the reproductive system in...Ch. 17.1 - Prob. 2LOCh. 17.1 - Compare the functions of the reproductive system...Ch. 17.1 - Contrast the two types of cell division in the...Ch. 17.1 - Prob. 3CYPCh. 17.2 - Identify the structures of the male reproductive...Ch. 17.2 - Describe the location and stages of...Ch. 17.2 - Prob. 3LOCh. 17.2 - Prob. 1CYPCh. 17.2 - Prob. 2CYP
Ch. 17.2 - Prob. 3CYPCh. 17.3 - Prob. 1LOCh. 17.3 - In your view, is male circumcision unjustifiable?...Ch. 17.3 - Prob. 2BTBCh. 17.3 - How should the United States prosecute parents who...Ch. 17.3 - Distinguish the structures of the female...Ch. 17.3 - Prob. 2CYPCh. 17.3 - Prob. 3CYPCh. 17.4 - List the stages of the ovarian cycle and explain...Ch. 17.4 - Prob. 2LOCh. 17.4 - Prob. 3LOCh. 17.4 - Summarize the roles of estrogen and progesterone...Ch. 17.4 - Describe the changes that occur in the ovarian and...Ch. 17.4 - Describe the changes that occur in the ovarian and...Ch. 17.5 - Prob. 1LOCh. 17.5 - Prob. 2LOCh. 17.5 - Prob. 3LOCh. 17.5 - Prob. 1BTBCh. 17.5 - Should couples with multiples'1 due to infertility...Ch. 17.5 - Prob. 3BTBCh. 17.5 - Prob. 4BTBCh. 17.5 - List the major forms of birth control in order of...Ch. 17.5 - Prob. 2CYPCh. 17.5 - Prob. 3CYPCh. 17.6 - Prob. 1LOCh. 17.6 - Prob. 2LOCh. 17.6 - Prob. 1BTHCh. 17.6 - Prob. 2BTHCh. 17.6 - Explain which condition can occur due to a...Ch. 17.6 - Prob. 2CYPCh. 17.6 - Discuss the causes of most STDs.Ch. 17 - Prob. 1ACh. 17 - Prob. 2ACh. 17 - Prob. 3ACh. 17 - Prob. 4ACh. 17 - Prob. 5ACh. 17 - (
9
)6. Label this diagram of the female...Ch. 17 - Prob. 7ACh. 17 - Prob. 8ACh. 17 - Prob. 9ACh. 17 - Prob. 10ACh. 17 - Prob. 11ACh. 17 - Prob. 12ACh. 17 - Prob. 13ACh. 17 - Prob. 14ACh. 17 - Prob. 15ACh. 17 - Prob. 16ACh. 17 - Female athletes who train intensively often stop...Ch. 17 - Prob. 2TCCh. 17 - Prob. 3TC
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- . This experiment is an example of a research approach in which scientists infer how something works normally based on what happens when the normal process is blocked. What normal process was blocked in Jost’s experiment? From the results, what inference can you make about the role of the gonads in controlling the development of mammalian genitalia?arrow_forwardWhich of the following is a true statement?(A) All mammals have menstrual cycles.(B) The endometrial lining is shed in menstrual cycles butreabsorbed in estrous cycles.(C) Estrous cycles are more frequent than menstrual cycles.(D) Ovulation occurs before the endometrium thickens inestrous cycles.arrow_forwardCompare and contrast the oogenesis and spermatogenesis in zebrafish and drosophila melanogasterarrow_forward
- The menstrual cycle provides an example of how endocrine biological clocks regulate reproduction. Can you give TWO other examples?arrow_forwardHermaphroditic animals can self-fertilize, except earthworms. Why? And is this an advantageous or disadvantageous trait to the earthworms?arrow_forwardComplete the concept map to describe the regulation of the uterine cycle including some of the physiological effects of estrogen and progesterone on the uterus.arrow_forward
- Create a conclusion about spermatogenesis by using the objectives below. To identify the parts of the male reproductive systems To find the stages of spermatogenesis in cross-sections of the testis of the frog, mouse, and man · To describe the morphological characteristics of frog gametesarrow_forwardIn mammals, the male gonad is called the______ . It produces both sperm and the sex hormone________ . Within the male gonad, spermatogenesis occurs within the hollow, coiled structures called_______ .arrow_forwardin your own words: Compare the reproductive organs of reptiles and birds. How are their reproductive patterns advantageous for their survival?arrow_forward
- A mammalian embryo puts the trophoblast into a hurried frenzy before it decides to proceed to the business of gastrulation. Is it a Clever move, or an evolutionary blunder? Explain wellarrow_forwardShown here are graphs that plot the percentage of fertilizedeggs containing males against the atmospheric temperatureduring early development in (a) snapping turtles and (b) mostlizards. Interpret these data as they relate to the effect oftemperature on sex determination.arrow_forwardHermaphroditic animals can self-fertilize, except earthworms. Why? And is this an advantageous or disadvantageous trait to the earthworms? Defend your answer.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY