Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
12th Edition
ISBN: 9780134811390
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 7, Problem 11PDQ
When cows have twin calves of unlike sex (fraternal twins), the female twin is usually sterile and has masculinized reproductive organs. This calf is referred to as a freemartin. In cows, twins may share a common placenta and thus fetal circulation. Predict why a freemartin develops.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What happens to leptin levels during pregnancy? Suggest why this may occur.
Explain why it is so
important that the
blood of mother
and offspring do
not mix together in
the placenta.
List the structural
features of the
placenta that
contribute to
efficient exchange
and explain why
each is important.
Hypothyroidism during pregnancy causes some
defects in growing babies. State any two of them.
Chapter 7 Solutions
Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
Ch. 7 - Campomelic dysplasia (CMD1) is a congenital human...Ch. 7 - Carbon Copy (CC), the first car produced from a...Ch. 7 - Gender is someones conscious and unconscious...Ch. 7 - Gender is someones conscious and unconscious...Ch. 7 - HOW DO WE KNOW? In this chapter, we have focused...Ch. 7 - Review the Chapter Concepts list on p. 151. These...Ch. 7 - Distinguish between the concepts of sexual...Ch. 7 - Contrast the XX/XY and XX/X0 modes of sex...Ch. 7 - Describe the major difference between sex...Ch. 7 - How do mammals, including humans, solve the dosage...
Ch. 7 - The phenotype of an early-stage human embryo is...Ch. 7 - What specific observations (evidence) support the...Ch. 7 - Describe how nondisjunction in human female...Ch. 7 - An insect species is discovered in which the...Ch. 7 - When cows have twin calves of unlike sex...Ch. 7 - An attached-X female fly, XXY (see the Insights...Ch. 7 - Assume that on rare occasions the attached X...Ch. 7 - It has been suggested that any male-determining...Ch. 7 - What is a Barr body, and where is it found in a...Ch. 7 - Indicate the expected number of Barr bodies in...Ch. 7 - Define the Lyon hypothesis.Ch. 7 - Can the Lyon hypothesis be tested in a human...Ch. 7 - Predict the potential effect of the Lyon...Ch. 7 - Cat breeders are aware that kittens expressing the...Ch. 7 - In mice, the Sry gene (see Section 7.2) is located...Ch. 7 - The genes encoding the red-and...Ch. 7 - What is the role of the enzyme aromatase in sexual...Ch. 7 - In the wasp Bracon hebetor, a form of...Ch. 7 - The Amami spiny rat (Tokudaia osimensis) lacks a Y...Ch. 7 - In mice, the X-linked dominant mutation Testicular...Ch. 7 - When the cloned cat Carbon Copy (CC) was born (see...Ch. 7 - In reptiles, sex determination was thought to be...Ch. 7 - In chickens, a key gene involved in sex...
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
- multiple births are observed commonly in women treated for infertility with drugs that stimulate the release of gonadotropic hormones. what could be the reason?arrow_forwardThe phenotype of an early-stage human embryo is considered sexually indifferent. Explain why this is so even though the embryo’s genotypic sex is already fixed.arrow_forwardAccording to the graph below, estrogen will reach its peak concentration prior to ovulation. Predict the concentration of the other hormones by choosing low, medium, or higharrow_forward
- Define external fertilisation. Mention its disadvantages.arrow_forwardAccording to the graph below, estrogen will reach its peak concentration prior to ovulation. Predict the concentration of the other hormones by choosing low,medium, or high.arrow_forwardLook at the chart above, which shows a dihybrid cross for two brown horses, which leads to brown, tan and white offspring. What kind of epistasis is this, and explain how you know?arrow_forward
- Shared germs as well as shared genes produce identical twin similarities. Explainarrow_forwardDraw the end results of I, MI, and MII and fertilization showing how an XYY individual could occur.arrow_forwardMatch the structure to its function/description (you can use an answer more than once): 3 1234 Produces estrogens Contains a layer called the myometrium Site of early embryonic development Site where folliculogenesis occurs Produces female gametes Birth canal Usual site of fertilization 4 2arrow_forward
- The childbirth process is controlled by a positive feedback mechanism. Explain how the mechanism works.arrow_forwardBirth control pills are oral contraceptives taken by women to prevent pregnancies. The most effective forms of birth control pills contain estrogen and a small amount of progestin (a synthetic hormone that mimics the effects of progesterone). Around day 21 of the 28-day cycle, administration of estrogen and progestin is stopped for 7 days. Low levels of progesterone result in Select one: a. suppression of GnRH in the hypothalamus and FSH and LH in the anterior pituitary b. menstruation, as the endometrium is maintained by progesterone c. increased levels of FSH and LH, resulting in a mature follicle d. increased levels of estrogen released by the corpus luteumarrow_forward_____ production is continuous from puberty onward in males; _____ production is cyclic and intermittent in females. a. Egg; sperm b. Sperm; egg c. Testosterone; sperm d. Estrogen; eggarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY