Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
14th Edition
ISBN: 9781305775480
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 34, Problem 1DAA
Summary Introduction
To determine: In which cities did the researchers record the highest and lowest sperm counts.
Introduction: Nowadays, the agricultural fields are extremely contaminated with pesticides that are applied in fields to destroy all pests. Pesticides are harmful chemicals with no specificity and are equally harmful to all the living beings. The pesticide not only kills the living environment, it also destroys the reproductive function of animals whose wombs are exposed to such chemicals. In many researches, it was found that the men working in the agricultural fields are more exposed to the pesticide, which may adversely affect their reproductive capability.
Expert Solution & Answer
Answer to Problem 1DAA
Correct answer: The highest sperm count is in City N and the lowest sperm count is in City C.
Explanation of Solution
Refer to Fig 34.22 “Characteristics of men in four cities” given in the question. Researcher S and her colleagues selected men from four cities from the US, namely City C, City L, City M and City N. Men from the cities were checked for their reproduction capabilities, especially the sperm count and sperm motility. From the given studies, it was found that men from the country with most farm lands were having a decreased sperm count and sperm motility. At the same time, the men in the area with no agriculture have the maximum sperm count and sperm motility.
Fig 34.22 shows that the sperm counts were 58.7 million/ml in City C (most of agricultural area) and in City N (with no agricultural area) the sperm count in men were 102.9 million/ml. Therefore, the city with the lowest sperm count is City C and the highest sperm count is in City N.
Conclusion
The highest sperm count is in City N and the lowest sperm count is in City C.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
1.Tell me the benefits for each type of reproductive method.
2.Tell me why an organism possibly will be able to do both sexual and asexual.
3. Several factors are listed below. Determine which of the factors will increase the variation in a population.
A.Several factors are listed below. Determine which of the factors will increase the variation in a population.
B.During mitosis, the parent cell divides and that increases the genetic variation in a population.
C.During m, chromosomes are copied, which creates variation.
D.During mitosis, mutations can change the DNA and that creates variation within species.
E.During meiosis, chromosomes can swap sections and recombine genetic material.
4. Match the types of Reproduction
1.Budding
2.Regeneration
3.Fission
4.Fertilizations
5.Propagation
A.Part of the organism breaks off for a new organism
B.Part of the organism breaks off for a new organism
C.Organisms splits evenly to create 2
D.egg combined with a sperm to create a zygote
E.One…
The graph above shows the estrogen and progesterone levels of an individual during a menstrual cycle of 28 days. The top light blue line indicates the progesterone levels and the bottom purple line indicates the estrogen levels. This individual is Answer. ( pregnant, in luteal phase , in follicular phase, entering menopause, taking oral contraceptive, in pre-ovulation phase , ovulating)This individual can be expected to have ( high , low ) levels of FSH and LH.
(BOLDED WORDS ARE THE POSSIBLE ANSWERS IVE PROVIDED, WHIVCH ONE IS CORRECT FOR THE SENTENCE.)
The human assisted reproductive technologies can solve many problems. What specific procedures can be used to help women with poor egg qualities, men with few sperm, couples with familial genetic diseases, women with mitochondrial diseases, young women who wanted to reproduce after they turn 50. please provide just the procedure name
Chapter 34 Solutions
Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
Ch. 34 - Prob. 1DAACh. 34 - Sperm Counts Down on the Farm Contamination of...Ch. 34 - Sperm Counts Down on the Farm Contamination of...Ch. 34 - Sperm Counts Down on the Farm Contamination of...Ch. 34 - __________are signaling molecules that travel...Ch. 34 - A __________ is synthesized from amino acids and...Ch. 34 - Match each pituitary hormone with its target....Ch. 34 - Releasing hormones secreted by the hypothalamus...Ch. 34 - In adults, too much __________ can cause...Ch. 34 - Function of the __________ declines after puberty....
Ch. 34 - Low blood calcium triggers secretion by ________....Ch. 34 - _______ lowers blood sugar levels; ________ raises...Ch. 34 - Prob. 9SQCh. 34 - Secretion of _______ suppresses immune responses....Ch. 34 - Exposure to bright light lowers blood _________...Ch. 34 - Prob. 12SQCh. 34 - True or false? Only women make...Ch. 34 - Prob. 14SQCh. 34 - Prob. 15SQCh. 34 - Women who have been blind since birth almost never...Ch. 34 - A diabetic who injects too much insulin can lose...
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
- Birth Defects and Multiple Births A woman who carries multiple offspring at the same time increases the risk of some birth defects. FIGURE 42.18 shows the results of Yiwei Tang's study of birth defects reported in Florida from 1W6 to 2000. Tang compared the incidence of various defects among single and multiple births. She calculated the relative risk for each type of defect based on type of birth, and corrected for other differences that might increase risk such as maternal age, income, race, and medical care during pregnancy. A relative risk of less than 1 means that multiple births pose less risk of that defect occurring. A relative risk greater than 1 means multiples are more likely to have a defect. FIGURE 42.18 Prevalence, per 10,000 live births, of various types of birth defects among multiple aria single births. Relative risk for each defect is given after researches adjusted for the motor's age, race, previous adverse pregnancy experience, education, Medicaid participation during pregnancy, as well as the infant's sex and number of siblings. 4. Does a multiple pregnancy increase the relative risk of chromosomal defects in offspring?arrow_forwardSperm Counts Down on the Farm Contamination of water by agricultural chemicals affects reproductive function in some animals. Are there effects on humans? Epidemiologist Shanna Swan and her colleagues studied sperm from men in four cities in the United States (FIGURE 34. 22). The men were partners of women who had become pregnant and were visiting a prenatal clinic, so all were fertile. Of the four cities, Columbia, Missouri, is located in the county with the most farmlands. New York City in New York is in an area with no agriculture. Location of Clinic Columbia, Missouri Los Angeles, California Minneapolis, Minnesota New York, New York Average age 30.7 29.8 32.2 36.1 Percent nonsmokers 79.5 70.5 85.8 81.6 Percent with history of STD 11.4 12.9 13.6 15.8 Sperm count (million/ml) 58.7 80.8 98.6 102.9 Percent motile sperm 48.2 54.5 52.1 56.4 FIGURE 34.22 Characteristics men h four cities. All men were partners of woman who visited prenatal health clinics, and so were presumably fertile. STD stands for sexually transmitted disease. 2. In which cities did samples show the highest and lowest sperm motility (ability to move)?arrow_forwardSperm Counts Down on the Farm Contamination of water by agricultural chemicals affects reproductive function in some animals. Are there effects on humans? Epidemiologist Shanna Swan and her colleagues studied sperm from men in four cities in the United States (FIGURE 34. 22). The men were partners of women who had become pregnant and were visiting a prenatal clinic, so all were fertile. Of the four cities, Columbia, Missouri, is located in the county with the most farmlands. New York City in New York is in an area with no agriculture. Location of Clinic Columbia, Missouri Los Angeles, California Minneapolis, Minnesota New York, New York Average age 30.7 29.8 32.2 36.1 Percent nonsmokers 79.5 70.5 85.8 81.6 Percent with history of STD 11.4 12.9 13.6 15.8 Sperm count (million/ml) 58.7 80.8 98.6 102.9 Percent motile sperm 48.2 54.5 52.1 56.4 FIGURE 34.22 Characteristics men h four cities. All men were partners of woman who visited prenatal health clinics, and so were presumably fertile. STD stands for sexually transmitted disease. Aging, smoking, and sexually transmitted diseases adversely affect sperm. Could differences in any of these variables explain the regional differences in sperm count?arrow_forward
- Sperm Counts Down on the Farm Contamination of water by agricultural chemicals affects reproductive function in some animals. Are there effects on humans? Epidemiologist Shanna Swan and her colleagues studied sperm from men in four cities in the United States (FIGURE 34. 22). The men were partners of women who had become pregnant and were visiting a prenatal clinic, so all were fertile. Of the four cities, Columbia, Missouri, is located in the county with the most farmlands. New York City in New York is in an area with no agriculture. Location of Clinic Columbia, Missouri Los Angeles, California Minneapolis, Minnesota New York, New York Average age 30.7 29.8 32.2 36.1 Percent nonsmokers 79.5 70.5 85.8 81.6 Percent with history of STD 11.4 12.9 13.6 15.8 Sperm count (million/ml) 58.7 80.8 98.6 102.9 Percent motile sperm 48.2 54.5 52.1 56.4 FIGURE 34.22 Characteristics men h four cities. All men were partners of woman who visited prenatal health clinics, and so were presumably fertile. STD stands for sexually transmitted disease. 4. Do these data support the hypothesis that living near farmlands can adversely affect male reproductive function?arrow_forwardResearchers are learning how to transfer sperm-making cells from fertile male mice into infertile male mice in the hopes of learning more about reproductive abnormalities. These donor spermatogonia cells have developed into mature spermatozoa in 70% of cases, and some recipients have gone on to father pups (as baby mice are called). This new advance opens the way for a host of experimental genetic manipulations. It also offers enormous potential for correcting human genetic disease. One potentially useful human application of this procedure is treating infertile males who wish to be fathers. a. Do you foresee any ethical or legal problems with the implementation of this technique? If so, elaborate on the concerns. b. Could this procedure have the potential for misuse? If so, explain how.arrow_forwardSperm and ova are similar in terms of ________. size quantity produced per year chromosome number flagellar motilityarrow_forward
- How many genetically different eggs could be formed by women with the following genotypes? Aa bb CC DD AA Bb Cc dd Aa Bb cc Dd 4. Aa Bb Cc Ddarrow_forwardAffected female Affected male O Unaffected female Unaffected male 11 IV 40/20 20 80/40 80 OO 180 90/20 160/20 20 A) Between 20 and 40 and between 80 and 180, respectively B) Between 20 and 40 and between 160 and 180, respectively C) Between 40 to 80 and between 160 and 180, respectively D) Between 40 to 80 and between 180 and 200, respectively O 40/20 80/20 160 20 180/20 20 dd 180/40 20 180/20 250/20 200 20/20160/20 20 200 20 WATAK 20/20 20 118. A 25-year-old nulligravid woman (individual IV-1 in the pedigree shown) and her 28-year-old husband come to the office for counseling prior to conception. Previous reproductive endocrinologic evaluation of the husband showed no abnormalities. The woman has a family history of fragile X syndrome. The genotype of the CGG trinucleotide repeat length in the 5'-untranslated exon of the FMR1 gene for each individual in the family is indicated. Based on these findings, the repeat length boundaries between normal and premutation and between premutation…arrow_forwardElsa Gonzaga, a 30-year-old G4P4 who delivered a 4,309-gm term male infant 40 minutes ago via NSD. She had normal pregnancy, and her only medications taken during pregnancy were prenatal vitamins. Her membranes ruptured at home 45 hours prior to delivery, and she was in active labor when she was admitted to Labor & Deliver. Her labor progressed quickly, and she delivered an hour later. The placenta was delivered spontaneously within 6-7 minutes. Her estimated blood loss was 400 ml. She had a second-degree perineal laceration that was repaired under local anesthesia. After one hour after her delivery the following vital signs were noted by the nurse: Pulse rate 100; BP 100/76; Resp Rate 22 and O2 saturation of 93% on room air. Uterine fundus is boggy and located at 3 cm above umbilicus. Patient is lethargic but responsive. Patient has pain in the lower abdomen and around the vagina. Hospital gown and bed lines are soaked with blood, perineal pads are saturated and changed pads every…arrow_forward
- Circle the letter of the correct response choose the correct answer, then write one sentence to explain your answer. 10. Variation in the offspring of sexually reproducing organisms is the direct result of (1) sorting and recombining of genes (2) replication and cloning (3) the need to adapt and maintain homeostasis (4) overproduction of offspring and competitionarrow_forwardIn stage 1 of labor, during active phase the cervix dilates? 4-7 cm 1-3 cm 8-10 cm 7-10 cmarrow_forward20arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Epidemiological Studies - made easy!; Author: Let's Learn Public Health;https://www.youtube.com/watch?v=Jd3gFT0-C4s;License: Standard Youtube License