n vitro fertilization (IVF) is a common assistive reproductive technology for couples who are struggling to conceive naturally; however, the success rate of IVF is, at best, about 55%. Researchers seeking to improve the success of IVF need to observe the interaction between sperm and eggs in order to better understand the factors that favour fertilization. Obviously, larger sperm and eggs would be easier to observe, even with the aid of microscopy. On this basis, which of the following vertebrate groups might be a good model for studying IVF because they are likely contain species with large sperm and eggs? Group of answer choices a) fish b) amphibians c) reptiles d) birds e) mammals

n vitro fertilization (IVF) is a common assistive reproductive technology for couples who are struggling to conceive naturally; however, the success rate of IVF is, at best, about 55%. Researchers seeking to improve the success of IVF need to observe the interaction between sperm and eggs in order to better understand the factors that favour fertilization. Obviously, larger sperm and eggs would be easier to observe, even with the aid of microscopy. On this basis, which of the following vertebrate groups might be a good model for studying IVF because they are likely contain species with large sperm and eggs? Group of answer choices a) fish b) amphibians c) reptiles d) birds e) mammals

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter16: Reproductive Technology, Genetic Testing, And Gene Therapy

Section16.5: Genetic Testing And Screening

Problem 1EG: Should fertility clinics be required to disclose all the risks of ART to couples seeking fertility...

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When investigating fertility concerns, a common course of action is to rule out sperm cell-related causes of infertility first since obtaining the relevant specimens is generally less invasive. Vitality is a commonly assessed parameter, particularly when motility is deemed poor since it allows physicians to differentiate between live non-motile sperm and dead sperm cells. The procedure for determining vitality is to place sperm in a hypotonic solution and observe the specimen under the microscope after a 5-minute incubation. This short incubation time allows for observable cellular changes without causing cell death. What type of microscope (light or electron) would you recommend using to observe sperm cells for this laboratory test and why?
In the process of in vitro fertilization, mature eggs are removed from the ovaries by a process called ?: 1) endoscopy 2) laparoscopy 3) microscopy 4) enthalpy ovaroscopy
When investigating fertility concerns, a common course of action is to rule out sperm cell-related causes of infertility first since obtaining the relevant specimens is generally less invasive. Vitality is another commonly assessed parameter, particularly when motility is deemed poor since it allows physicians to differentiate between live and dead sperm cells. Describe what you would expect to observe (after using the microscope) in the case of a live sperm cell and why? How can you distinguish it from a dead sperm cell in the same sample?
When investigating fertility concerns, a common course of action is to rule out sperm cell-related causes of infertility first since obtaining the relevant specimens is generally less invasive. Sperm number and motility are typically the first parameters assessed in a semen sample. Vitality is another commonly assessed parameter, particularly when motility is deemed poor since it allows physicians to differentiate between live non-motile sperm and dead sperm cells. The procedure for determining vitality is to place sperm in a hypotonic solution and observe the specimen under the microscope after a 5-minute incubation. This short incubation time allows for observable cellular changes without causing cell death. What type of microscope would you recommend using to observe sperm cells for this laboratory test and why?
Some couples practice natural family planning (also known as the rhythm method of birth control), which involves abstaining from sexual intercourse during the time that a woman can become pregnant in her menstrual cycle. The egg only survives in the Fallopian tube for 24 hours after ovulation, so conception can only happen during a 24-hour period each month. However, this form of contraception is very unreliable and is not recommended for couples who are actively trying to avoid pregnancy. Which of the following is NOT a reason why this form of birth control is unreliable? Select one: a. Women always ovulate on the same day of their menstrual cycle every month. b. Ovulation can be affected by stress or illness. c. Sperm can survive in the Fallopian tubes for 3 to 5 days. d. It is difficult to predict exactly when in her cycle a woman ovulates.
When investigating fertility concerns, a common course of action is to rule out sperm cell-related causes of infertility first since obtaining the relevant specimens is generally less invasive. Sperm number and motility are typically the first parameters assessed in a semen sample. Vitality is another commonly assessed parameter, particularly when motility is deemed poor since it allows physicians to differentiate between live non-motile sperm and dead sperm cells. The procedure for determining vitality is to place sperm in a hypotonic solution and observe the specimen under the microscope after a 5-minute incubation. This short incubation time allows for observable cellular changes without causing cell death. What type of microscope would you recommend using to observe sperm cells for this laboratory test and why? Describe what you would expect to observe in the case of a live sperm cell and why? How can you distinguish it from a dead sperm cell in the same sample?
Some couple practice natural family planning (also known as the rhythm method of birth control), which involves abstaining from sexual intercourse during the time that a woman can become pregnant in her menstrual cycle. The egg only survives in the fallopian tube from 24 hours after ovulation, so conception can only happen during a 24-hour period each month. However, this form of contraceptive is very unreliable and is not recommended for couples who are actively trying to avoid pregnancy. Which of the following is NOT a reason why this form of birth control is unreliable? A. Sperm can survive in the fallopian tubes for 3 to 5 days. B. Ovulation can be affected by stress or illness. C. Women always ovulate on the same day of their menstrual cycle every month. D. It is difficult to predict exactly when in her cycle a woman ovulates.
Give detail explanation of what pathologies are involved in A woman has been trying for a baby without success. Link the technologies: Hormonal stimulation Intrauterine insemination (IUI) And (in vitro fertilisation)
List and briefly describe three different types of assisted reproductive technology that might be utilized by a couple who wants to have a child but has fertility problems. (Keep it to three paragraphs please)
What is an ethical use of prenatal screening and pre-implantation screening (since sometimes, fetuses found with down-syndrome are discarded; there are also cultures where, male offspring is preferred so embryos screened and found to be females are discarded?
Figure 19.16 Devices and substances used for birth control include (a) male and female condoms, (b) spermicide in film, sponge, suppositories, and gel, (c) oral contraceptives, and (d) a copper IUD. (a, d): e McGraw-Hill Education/Jill Braaten, photographer; (b): © PhotoLink/Getty Images RF: (c): © Don Farrall/Getty Images RF IMALE Which of these methods of birth control uses hormones to prevent pregnancy? Answer can be found in Appendix F. (a) SAT SUN MON (d) (c) (b) TUE THU
Jack and Gill are married couples with three children . The couple consulted a family planning clinic . As the nurse manning the clinic you counselled the couple regarding family planning . Jack asks the nurse about vasectomy . He understands that this is a minor operation and asks if he'll become sterile immediately . The nurse's best response is: “No you'll remain fertile ." It may takes several weeks and as many as 30 to 40 ejaculations to remove all the live sperm." You'll be sterile in 2 to 3 days ." If the procedure is done correctly you'll be sterile immediately