How do you make a three-parent baby? OA. Replace intended Mom's nucleus with a donor's nucleus. B. Replace intended Mom's egg with a donor's egg. C. Replace intended Mom's mitochondria with a donor's mitochondria. D. Replace intended Dad's sperm with a donor's sperm.
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- What is the difference between in vitro fertilization (IVF)and artificial insemination? Select one: a. IVF involves fertilization outside the body, whereas artificial insemination involves internal fertilization. b. During IVF, gametes are introduced into the womb, whereas during artificial insemination, a blastocyst is implanted on the uterus. c. IVF includes giving the woman additional FSH and LH to induce superovulation, whereas artificial insemination involves a woman undergoing any hormonal treatment. d. Artificial insemination can be used during a surrogacy, whereas IVF cannot.What values are at odds in the controversy about the use of fetal stem cells in research?A. In 1952, the nucleus of a _______________________ embryo was placed into a donor cell. Was the embryo cloned successfully? ___________________ B. Can the nucleus of an adult cell be injected into an egg cell and produce a clone?
- A: Why do sea urchins have external fertilization? [Discuss the life style of the developing sea urchin embryo in the water column compared to a very different ecological niche of the adults on the ocean floor. Besides, would you want to give live birth to a sea urchin! ouch!] 2: Then why don't the parents take care of the young? [In fact the adults do in a way. After the embryo has grown large enough and metamorphosed into a young urchin they hide in the spines of the adults, living off of the scraps of food produced from the messy eating of the adults] 3: Because the urchin life involves two or more ecological niches, they are more susceptible to predation and exposure to environmental toxins. What environmental conditions, predators and toxins might they be exposed to at each stage?During cleavage, the mass of cells: a. increases b. decreases c. doubles with every cell division d. does not change significantlyHow do you expect Kartagener syndrome leads to infertility? A. The lack of a plasma membrane means that pathogens and foreign substances can permeate the sperm and damage the DNA B. The lack of microtubules mean the sperm do not have tails and cannot swim to fertilize the egg C. The lack of dynein means that the sperm cannot bend their tails to swim and fertilize the egg
- 5. Do other organs or organ systems develop at the same time? Are they related to the function of your assigned organ or organ system? 6. 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? dorotondinThe maternal contribution to body plan formation comes with A. siRNAs. B. tRNAs. C. ribosomes. D. cytoplasmic determinants.is when an egg is released from the ovary. This typically occurs once a month in females. occurs when the egg is not fertilized. It involves the egg being broken down by enzymes in the uterus, as well as the egg and the uterine lining being expelled from the body. occurs when male and female sex cells unite. Fertilization produces a which eventually turns into an embryo, and later into a fetus, is a word used to describe cell division in a zygote. The zygote undergoes cleavage/cell division to form a hollow ball of cells called a blastocyst. or After the zygote becomes a blastula, the cells keep dividing into a ball of cells that is composed of three germ layers. This ball of cells composed of three germs layers is called a is the process by which cells develop in different ways to perform different functions. Once it has begun, tissues and organs develop rapidly from the three germ layers of the gastrula. About 8 weeks after fertilization, the major organs have begun to develop and…
- 4. Place the following five steps in the correct order: ________ Deliver cloned baby ________ Remove and discard the nucleus from the egg cell ________ Isolate nucleus from the genetic mother ________ Transfer the new nucleus from the genetic mother into the enucleated egg cell ________ Implant embryo into a surrogate motherFrom what you know about embryonic development, do you think that a cell from the inner cell mass or one from the ectoderm has more developmental potential?A pregnant woman visits a doctor to determine the sex of her child. The doctor refused to perform the test. Why is she being denied?