Explain the following in paragraph form consists of at least five sentences for each question. Compared to separate sexes and assuming self-fertilizing is not possible, what might be one advantage and one disadvantage to hermaphroditism?
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Direction: Explain the following in paragraph form consists of at least five sentences for each question.
Compared to separate sexes and assuming self-fertilizing is not possible, what might be one advantage and one disadvantage to hermaphroditism?
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- Direction: Explain the following in paragraph form consists of at least five sentences for each question. 1.What might be a disadvantage to temperature-dependent sex determination? 2.Compared to separate sexes and assuming self-fertilizing is not possible, what might be one advantage and one disadvantage to hermaphroditism?IN AN OUTLINE FORM, describe briefly the phases of neurulation. Mention some signaling molecules, genes, morphogenetic factors, and other factors, intrinsic/extrinsic factors responsible for each phase. NOTE: Make sure the answer is in OUTLINE FORM. SUBJECT: Developmental Biology.Disorder of Sex Determination Now that you have reviewed typical sexual determination in humans, it is time to review some case studies of patients that present with sex determination disorders. Using the symptoms presented, research online to determine the nature of the disorder, its mechanism (what causes the disorder) and also any complications and treatment options that may exist. Case 1 A 16-year old patient presents with the following symptoms: Presents as normal external female Did not develop breasts at puberty Did not proceed through menarche (first menstrual cycle) Genetic karyotyping revealed XY Gonadal 'streaks' found upon internal examination Diagnosis Mechanism Possible Complications and Recommendations
- Conditions that cause the fallopian tubes to be narrower than normal may result in: Implantation of a fertilized ovum within the tube. More rapid propulsion of the ovum through the tube. Increased likelihood of pregnancy during each cycle. Excessive cramping and bleeding during menstruation .Direction: Study the given series of events below. Arrange the sequence of the following events in chronological order by numbering each event from 1 to 5 according to the four phases of the menstrual cycle. Then, indicate on the space provided in which phase of the menstrual cycle does each event occur. Example answer: 3 Follicular Phase ___The body produces Human Chorionic Gonadotropin (HCG) if the mature egg is in order to maintain the thickness of the uterine lining for the fertilized to develop into an embryo. If not fertlized, the corpus luteum will be dissolved into the body and disappear and both hormone levels will fell. ______________________ ___The Mentrual cycle officially starts.______________ ___The pituitary gland releases Luteinizing Hormone as a result of rising levels of estrogen in order to stimulate the ovary to release a mature egg._________________combination birth control pills contain estrogen and progestin. A typical pill packet contains 3 weeks of active hormones and 1 week of placebo pills. During the week of placebo pills, menstruation occurs. Use your knowledge of the hormonol control of the female reproductive system to: 1) Explain how the pills alter the feedback pathways of FSH and LH to prevent pregnancy. 2) Explain why menstruation occurs during the placebo week
- Describe the 28-day uterine cycle in females, citing important timeframes/hormones/events in the cycle. Your response must include the difference between fertilization occurring and fertilization not occurring throughout this cycle and how that would effect the cycle's "completion" (What I mean by this is describe the entire cycle and how it would change if a zygote is successfully formed and implanted into the uterus resulting in pregnancy)Understanding the causes of infertility can be valuablein developing new birth control methods. Cite a type ofcontraceptive based on each of the following causes of infertility:(a) failure to ovulate due to a hormonal imbalance;(b) a large fibroid tumor that disturbs the uterine lining;(c) endometrial tissue blocking uterine tubes;(d) low sperm count (too few sperm per ejaculate).Briefly explain the process of spermatogenesis. Make sure to include relevant anatomicalstructures and name all stages.
- Listed in the table below are the five major reproductive hormones that support ovulation in female mammals, including the giant panda. Describe the role of each hormone in this process and the approximate time during the ovarian cycle that it reaches peak levels. Hormone Gonadotropin-releasing hormone (GnRH) Estrogen Luteinizing hormone (LH) Follicle stimulating hormone (FSH) Progesterone Role in Regulation of the Menstrual Cycle Timing of Peak LevelMatching: Match the letter to the words that best describes it. 1. Vulva 2. Myometrium 3. Fimbriae 4. Corpus luteum 5. Ovarian ligament 6. Ovulation 7. Oogenesis 8. Vagina 9. Lactiferous duct 10. Perineum 11. Ovary 12. Sus[sensory ligament 13. Human chorionic gonadotropin 14. Endometrium 15. Broad ligament 16. Infundibulum 17. Cervix 18. Fallopian tube 19. Uterus 20. FSH, LH bas a. Lining layer of the uterus b. Receptacle for the penis during sexual intercourse с. Remnant of mature follicle after ovulation d. Attaches ovary to pelvic wall e. Site where milk emerges from the breast f. Portion of uterus responsive to oxytocin g. Stimulates growth of follicles h. Produces gametes and hormones i. Formation of gametes bas j. Expulsion of secondary oocyst k. Double layered fold of peritoneum that attaches uterus and ovaries to the pelvic it sluon ori ei wall 1. Funnel shaped portion of fallopian tube m. Opens into the vaginaAnswer the ff. What steps in male reproductive physiology do you think might be possibly blocked pharmacologically in order to produce such a contraceptive for males? What are the negative effects of candidate drugs currently proposed for the male hormonal contraceptive? What alternative ways are considered that will reduce these effects?