Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 8, Problem 17PS
Interpreting Data The graph shows the incidence of Down syndrome in the offspring of normal parents as the age of the mother increases. For women under the age of 30, how many infants with Down syndrome are born per 1,000 births? At age 40? At age 50? How many times more likely is a 50-year-old woman to give birth to a baby with Down syndrome than a 30 year old woman?
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What is the conception rate if there are 130 cows exposed during breeding but only 78 got pregnant?
Data:Total Births: 2,700 Low Birth Weight: 264Mothers with inter-gestational interval < 12 months: 92Mothers with low birth weight with inter-gestational interval < 12 months: 21Mothers with previous HTN: 18Mothers with low birth weight with previous HT: 15
A) Global or absolute risk of low birth weight.B) Relative risk for the factor "inter-gestational interval < 12 months". According to the results obtained, give your opinion as to whether there is an association or not and express it accordingly.C) Relative risk for the factor "mothers with previous HTN". According to the results obtained, give your opinion as to whether or not there is an association and express it accordingly.D) In the case of the factors in which you consider, according to the results obtained, that there is an association, calculate the Attributable Risk (AR) and the Etiological Risk Fraction (ERF), expressing in both cases their significance.
A 20-year-old patient is currently 10 weeks pregnant. She had a miscarriage at 13 weeks 1 year ago. What is her GPTPAL?
G1P0 (0-0-0-0)
G2P0 (1-0-0-0)
GIP0 (0-0-1-0)
G2P0 (0-0-1-0)
Chapter 8 Solutions
Campbell Essential Biology (7th Edition)
Ch. 8 - Which of the following is not a function of...Ch. 8 - In what sense are the daughter cells produced by...Ch. 8 - Why is it hard to observe individual chromosomes...Ch. 8 - A biochemist measures the amount of DNA in cells...Ch. 8 - What phases of mitosis are opposite in terms of...Ch. 8 - Complete the following table to compare mitosis...Ch. 8 - If an intestinal cell in a dog contains 78...Ch. 8 - A micrograph of a dividing cell from a mouse shows...Ch. 8 - Prob. 9SQCh. 8 - Prob. 10SQ
Ch. 8 - Although nondisjunction is a random event, there...Ch. 8 - Prob. 12IMTCh. 8 - Prob. 13IMTCh. 8 - For each statement, identify which major theme is...Ch. 8 - A mule is the offspring of a horse and a donkey. A...Ch. 8 - You prepare a slide with a thin slice of an onion...Ch. 8 - Interpreting Data The graph shows the incidence of...Ch. 8 - If an endangered species can reproduce by...Ch. 8 - Every year, about a million Americans are...Ch. 8 - The practice of buying and selling gametes,...Ch. 8 - Prob. 21BS
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- Observation 1: 1 out of 2 first trimester abortuses show abnormal karyotypes with 96% caused by numerical abnormalities and 4% with structural abnormalities. At live birth, 1 out of 160 has abnormal karyotypes with 60% caused by numerical changes. This number increases with fetuses of mothers over 35 years old to 1/50 for total incidence and 85% for numerical changes. Questions: Think of reasons why it is important to maintain the number and structure of chromosomes. Why is maternal age so important?arrow_forwardSuppose you are a carrier of fragile X syndrome and want to have children. Would you choose pregnancy, adoption, or surrogacy? If you became pregnant, would you opt for prenatal diagnosis? Explain your decisions.arrow_forward_______ Which of the following statements is incorrect? a. Rates of preterm delivery and low birth-weight in the United States are trending downward but remain higher in non-Hispanic Black American women and infants than in other groups. b. Reductions in the proportion of infants born small, early, or both would clearly decrease infant mortality. c. The international ranking of the United States for infant mortality rate has been improving since the beginning of the twenty-first century. d. National health objectives for pregnant women and newborns focus on the reduction of low birth-weight, preterm delivery, and infant mortality.arrow_forward
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