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Q: Which statement below concerning oogenesis is FALSE? About half the oogonia complete mitosis between…
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A previously infertile couple wishes to have a pregnancy but the man produces non-motile sperm. If it were possible to fertilize one of the woman's eggs by removing a sperm nucleus and injecting it into the egg, could this procedure ever produce viable offspring? Why or why not? Elaborate.
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- A previously infertile couple wishes to have a pregnancy but the man produces non-motile sperm.If it were possible to fertilize one of the woman's eggs by removing a sperm nucleus and injectingit into the egg, could this procedure ever produce viable offspring? Why or why not?In your own words: If cell division during gametogenesis were non-meiotic, what would be its consequence for future generations of diploid organisms? Expound.In vitro fertilization (IVF) is a procedure that can help couples who are having difficulty becoming pregnant due to blocked Fallopian tubes, low sperm count, low sperm motility, or sperm that cannot penetrate the outer layer of an egg, among other conditions.Normally, an ovary produces one mature ovum per 28-day cycle. In order to ensure a successful IVF procedure, doctors try to retrieve a large number of mature eggs.In order to obtain a greater than normal number of mature eggs, doctors inject the IVF candidate with a drug such as Bravellissima, which stimulates multiple follicle development. They also administer a drug such as Centrotic, which suppresses ovulation to prevent earlier than anticipated ovulation of mature ova. Which of the following rows correctly identifies the naturally occurring hormones that the IVF drugs are imitating? Select one: a. Bravellissima Centrotic FSH Estrogen b. Bravellissima Centrotic Progesterone LH c. Bravellissima…
- In-vitro fertilization occurs in the laboratory. The resulting embryos remain in a laboratory culture for up to six days before being transferred to the potential mother. If fertilization had occurred naturally (i.e., inside the female reproductive system instead of in-vitro), where would the embryo be and what developmental processes would it be undergoing during those first six days of development?If a single diploid somatic cell with 18 chromosomes undergoes meiosis and produces sperm, the result will be _________ sperm, each with _________ chromosomes. (Provide two numbers.)Fertilization is the fusion of haploid gametes, ovum and spermatozoon, to form a diploid zygote. Discuss physiologic mechanisms in the male and the female that make sure that indeed only one sperm fertilizes a single egg
- All of the following are true of spermatogenesis EXCEPT: Question 21 options: The products are spermatozoa that each have a head, midpiece and tail. One spermatogonium produces 4 spermatids DNA replicates once, but cells divide twice. Spermatids containing 23 chromosomes (1n) are produced. Genetically diverse spermatids are created.In a possible future scenario, male fertility drops to zero, but, luckily, scientists develop a way for women to pro-duce babies by virgin birth. Meiocytes are converted di-rectly (without undergoing meiosis) into zygotes, which implant in the usual way. What would be the short- andlong-term effects in such a society?Suppose that in the near future, you are a prenatal care provider. In the most recent ultrasound checkup on the expecting mother, you unfortunately found that the fetus is suffering a neural tube defect in the form of anencephaly. Seeing as the mother is still in the 12th week of pregnancy or the 1st trimester, the pregnancy can still be terminated via medical means. How would you explain to the parents the situation they are in?
- If cell division during gametogenesis were non-meiotic, what would be its consequence for futuregenerations of diploid organisms? Expound.Examine the diagram below and answer the following questions. a) What specific stage of meiosis is this cell in? b) Exactly how many chromosomes will be in each of the 4 resulting gametes?In human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and one cell that becomes a spermatogonium. Draw four rounds of mitosis for a stem cell and label; the daughter cells. For one spermatogonium, draw the cells it would produce from one round of mitosis followed by meiosis. Label the cells, and label mitosis and meiosis. What would happen if stem cells divided like spermatogonia?